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Packaged by Turner Cooling System Service

The cooling system is considered a weak point on several BMW generations. We put together cooling system service kits to help you get everything you need to refresh your system without any additional research. If you've done your research and know you only need one certain component, check out our Cooling category.
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Basic Cooling System Service Kit - E53 X5 M54 3.0L
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T#:557190
Part#: E53X5M54BCKT
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02-27-2026

$ 386.06 USD
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$ 402.99

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$ 386.06 USD
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Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

See kit contents below for all included components.

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Basic Cooling System Service Kit - E60/61 525 528 530 N52 3.0L w/ Aut...
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T#:557220
Part#: E6XN52BCKT
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Sale - Save 2% $ 685.99

This product was last offered at the strikethrough price on
05-03-2026

$ 669.31 USD
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$ 685.99

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$ 669.31 USD
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Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

See kit contents below for all included components.

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High Performance Cooling System Upgrade - E46 Non-M w/ Manual Transmi...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:557295
Part#: E46NONMPCKT
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Sale - Save 3% $ 1,406.99

This product was last offered at the strikethrough price on
05-29-2026

$ 1,370.50 USD
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Sale - Save 3%
$ 1,406.99

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$ 1,370.50 USD
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If you plan to drive your BMW aggressively on the track, it is important that you upgrade your cooling system to avoid overheating. To ensure your BMW keeps cool on the track, we have built out our new High Performance Cooling System Upgrade kits. Featured in this kit is everything you will need to redo your cooling system from top to bottom with OEM components, with select stock components swapped out for the high performance alternative! This kit includes a high performance Mishimoto Radiator, for significantly better cooling than the stock radiator and full aluminum construction that won't crack from long term heat cycling, a performance Mishimoto 70*C thermostat, for lower temperature operation and increased cooling of the engine, and a Stewart High Performance Water Pump, for dramatically increased coolant flow at all RPMs.
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Cooling System overhaul Kit - E30 325i/is/ix/e From 1988
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Packaged by Turner - Corporate Logo
T#:554135
Part#: 11531722218KT3
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Sale - Save 2% $ 673.99

This product was last offered at the strikethrough price on
06-29-2026

$ 658.39 USD
Sale - Save 2%
$ 673.99

This product was last offered at the strikethrough price on
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$ 658.39 USD

This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the E30 325 with the M20 engine. 

A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts. 

This water pump fits the following BMWs: 
1998-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix 

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High Performance Cooling System Upgrade - E36 323, 325 (06/95+), 328 ...
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T#:25772575
Part#: E36PCKT1
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Sale - Save 1% $ 922.99

This product was last offered at the strikethrough price on
07-06-2026

$ 913.58 USD
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$ 922.99

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$ 913.58 USD
Water Pump and Thermostat Package - N51/N52 Engine - E82 128i, E9X 32...
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Packaged by Turner - Corporate Logo
T#:42873693
Part#: TMS206099GKT
In Stock
$ 729.35 USD
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Our water pump/thermostat overhaul includes:

  • Electric Water Pump
  • Aluminum mounting screws for water pump
  • Thermostat
  • Connecting hose from thermostat to water pump 
  • Hose clamps

 

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Basic Cooling System Service Kit - E9X 328i/xi N52 3.0L w/ Auto Trans...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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T#:557241
Part#: E9X328BCKT
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03-24-2026

$ 673.03 USD
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$ 673.03 USD
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Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

See kit contents below for all included components.

Show More Show Less
Complete Cooling System Overhaul Package - 1988-1992 E30 325i/is/ic ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:339938
Part#: TMS16415
In Stock
Sale - Save 14% $ 314.99

This product was last offered at the strikethrough price on
05-17-2026

Starting at $ 270.98 USD
Sale - Save 14%
$ 314.99

This product was last offered at the strikethrough price on
05-17-2026

Starting at $ 270.98 USD
This Cooling Kit for the 1988-1992 E30 325i covers all of the major replacement parts for the original cooling system. We start with an OEM Behr radiator and then you choose the additional parts you need to replace next. Add hoses, sensors, water pumps, thermostats, gaskets, hose clamps, and more. We also sell the correct Original BMW antifreeze to finish off the job.

Of the systems in your E30, the cooling system is not where you want to let slide or skip maintenance. Almost nothing will ruin your day more than an overheating engine and it's usually at the absolute worse time. Maintaining the cooling system is easy and you can do most or all of the work yourself with ordinary tools. There's no reason not to address a leaky or out of date cooling system right away.

To save you time and money, we recommend replacing major components with related parts.
Radiator (manual: 17112241912; automatic: 17112241913)
Upper (#11531722218) and lower (#11531718980) hoses to thermostat.
Thermostat with o-ring and housing gasket (#11531713040).
Water pump with timing belt and tensioner (#09-9320-000).
Associated hoses with each of the above.
V-belts with any of the above.

Use the options below to build your package.

This cooling package fits the following BMWs:
1988-1992 E30 BMW 325i 325ic 325is
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E82 128i, E9X 328i Auto Cooling Overhaul Package
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:340251
Part#: TMS214378
In Stock
Sale - Save 16% $ 621.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 521.53 USD
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Sale - Save 16%
$ 621.99

This product was last offered at the strikethrough price on
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Starting at $ 521.53 USD
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This cooling overhaul will cover just about everything you could replace on the 328's cooling system. We start with the basic water pump and thermostat bundle. These are already vital to the health and durability of the N52 328i. But to properly maintain these cars for the long term, the rest of the cooling system must be refreshed and preventatively replaced. Here you can add a radiator, expansion tank, all of the 328 cooling hoses, and the BMW antifreeze. This package fits 328i/328xi with N52 engine and automatic transmission. Some of the components are different for the automatic models because of the auto transmission oil cooler.

The sophisticated electronics of the ECU and water pump means catastrophic overheating should be a thing of the past. But the downside is that the electronics can shut down without any warning or symptoms. And troubleshooting is equally frustrating since the water pump electronics are not readable or serviceable. There are several clues to a faulty thermostat or water pump - the fan runs at full speed all the time (even immediately on a cold start), pending (soft) fault code for low coolant flow, or the water pump can be heard running constantly. But when the pump fails it's an immediate shut down of the engine which can be a major inconvenience and lead to additional repairs that might have been avoided with preventative maintance. We recommend a full cooling system overhaul on the E90/E92 every 80-90,000 miles and to check for soft/pending codes at every 5,000 mile service .


Base Cooling Overhaul Package - Water Pump and Thermostat
(click to expand)
Includes:
+ Genuine BMW electric water pump, p/n 11517586925
+ mounting screws for water pump (set of 3), p/n 11510392553
+ OEM Behr thermostat, p/n 11537549476
+ Original BMW connecting hose from thermostat to water pump, p/n 11537521049
+ OEM-style hose clamps for hose (x 2)

The water pump on the N52 engine has more cooling responsibilities than ever before. The good news is that the pump only works when, and only as much, as it needs to. That means the system can actually stop the pump when it doesn't need to be running. The bad news is that it's now an electrical part, so a failure is usually immediate and with no warning. The preventative replacement is your only insurance from a very inconvenient and costly breakdown in the future. Plus you get the very latest BMW water pump design with any improvements they've made since your original pump was installed.
Cooling Hoses
(click to expand)
With regular driving the hoses should last a very long time. Even the plastic connectors seem to be holding up well. But as a preventative measure new hoses are recommended. We have also seen issues with re-using hoses as the spring connectors get weak over time and may not have the strength to hold the hose in place. They seem to have a tough time holding tension especially when they have been removed and reinstalled. In the interests of a thorough overhaul we recommend replacing these 328 water hoses during this job (see diagram):
  • 17127531579, upper radiator hose
  • 17127564478, lower radiator hose
  • 11537613176, water pump to engine
  • 11537534880, gasket for #176 hose
  • 11537545890, thermostat to cylinder head (includes new o-ring)
  • 17117524710, radiator to auto trans cooler
    There are other hoses too but they are not often replaced during a radiator swap (radiator vent hose and heater core hose) and they don't see much wear. We offer these as well if you want a complete set (see Additional Items at the bottom of the page).
Expansion Tank Options
(click to expand)
The expansion tank on the 328 is not prone to failures (unlike previous 3-series cars) so a new one is not strictly required. There aren't many seams or stress points for it to crack and we haven't heard of too many issues. But we wanted to offer it as part of a complete overhaul in case you want to cover everything. Simiarly, the level sensor is not required unless you're getting erroneous 'low coolant' warnings from the dash/iDrive. We do strongly recommend replacing the cap because that is designed to be the weak point in the system. The cap is what regulates the pressure inside the system and it should be replaced every few years anyway.

BUY AS A PACKAGE AND SAVE $$!

This cooling package fits the following BMWs with the N52 engine and an auto transmission:
2008-2012 E82 BMW 128i
2007-2011 E90 BMW 328i 328xi 328i xDrive - Sedan
2007-2012 E91 BMW 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive - Coupe
2007-2013 E93 BMW 328i - Convertible
Note: not for cars that have the dealer-installed auxiliary heating option. Some of the hoses are different with that option. It's not a very common option in North America (except in parts of Canada) but there are hoses that are specific to that option.


Click on the options for your kit below and then click "update price" for your kit total.
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E82 128i N51 SULEV, E9X 328i N51 SULEV Auto Cooling Overhaul Package ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:340253
Part#: TMS215325
In Stock
Sale - Save 12% $ 1,280.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 1,122.07 USD
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Sale - Save 12%
$ 1,280.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 1,122.07 USD
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This cooling overhaul will cover just about everything you could replace on the 328 SULEV's cooling system. We start with the basic water pump and thermostat bundle. These are already vital to the health and durability of the N51 328i SULEV. But to properly maintain these cars for the long term, the rest of the cooling system must be refreshed and preventatively replaced. Here you can add a radiator, expansion tank, all of the 328 SULEV cooling hoses, and the BMW antifreeze. This package fits 128i/328i SULEV with N51 engine and automatic transmission. Some of the components are different for the automatic models because of the auto transmission oil cooler.

The sophisticated electronics of the ECU and water pump means catastrophic overheating should be a thing of the past. But the downside is that the electronics can shut down without any warning or symptoms. And troubleshooting is equally frustrating since the water pump electronics are not readable or serviceable. There are several clues to a faulty thermostat or water pump - the fan runs at full speed all the time (even immediately on a cold start), pending (soft) fault code for low coolant flow, or the water pump can be heard running constantly. But when the pump fails it's an immediate shut down of the engine which can be a major inconvenience and lead to additional repairs that might have been avoided with preventative maintance. We recommend a full cooling system overhaul on the E90/E92 every 80-90,000 miles and to check for soft/pending codes at every 5,000 mile service .


Base Cooling Overhaul Package - Water Pump and Thermostat
(click to expand)
Includes:
+ Genuine BMW electric water pump, p/n 11517586925
+ mounting screws for water pump (set of 3), p/n 11510392553
+ OEM Behr thermostat, p/n 11537549476
+ Original BMW connecting hose from thermostat to water pump, p/n 11537521049
+ OEM-style hose clamps for hose (x 2)

The water pump on the N51 engine has more cooling responsibilities than ever before. The good news is that the pump only works when, and only as much, as it needs to. That means the system can actually stop the pump when it doesn't need to be running. The bad news is that it's now an electrical part, so a failure is usually immediate and with no warning. The preventative replacement is your only insurance from a very inconvenient and costly breakdown in the future. Plus you get the very latest BMW water pump design with any improvements they've made since your original pump was installed.
Cooling Hoses
(click to expand)
With regular driving the hoses should last a very long time. Even the plastic connectors seem to be holding up well. But as a preventative measure new hoses are recommended. We have also seen issues with re-using hoses as the spring connectors get weak over time and may not have the strength to hold the hose in place. They seem to have a tough time holding tension especially when they have been removed and reinstalled. In the interests of a thorough overhaul we recommend replacing these 328 SULEV water hoses during this job (see diagram):
  • 17127531579, upper radiator hose
  • 17127531581, lower radiator hose
  • 11537613176, water pump to engine
  • 11537534880, gasket for #176 hose
  • 11537545890, thermostat to cylinder head (includes new o-ring)
  • 17117524710, radiator to auto trans cooler
    There are other hoses too but they are not often replaced during a radiator swap (radiator vent hose and heater core hose) and they don't see much wear. We offer these as well if you want a complete set (see Additional Items at the bottom of the page).
Expansion Tank Options
(click to expand)
The expansion tank on the 328 SULEV is not prone to failures (unlike previous 3-series cars) so a new one is not strictly required. There aren't many seams or stress points for it to crack and we haven't heard of too many issues. But we wanted to offer it as part of a complete overhaul in case you want to cover everything. Simiarly, the level sensor is not required unless you're getting erroneous 'low coolant' warnings from the dash/iDrive. We do strongly recommend replacing the cap because that is designed to be the weak point in the system. The cap is what regulates the pressure inside the system and it should be replaced every few years anyway.
Coolant Temp Sensors
(click to expand)
There are two coolant temp sensors on the 328 SULEV - in the lower radiator hose and in the cylinder head. Both feed coolant temps to the ECU to regulate the water pump and cooling fan. You should replace the one in the lower radiator hose because it's one of the main sources for coolant leaks, especially when the old sensor is re-used in a new hose. The sensor in the cylinder head is not as prone to leaks and it's easily accessible so you don't have to replace it right away. But we offer it with the package in case you want to have a complete cooling system overahul.
13621433077, coolant temp sensor (in lower radiator hose)
13621433076, coolant temp sensor (in cylinder head, next to oil filter housing)

BUY AS A PACKAGE AND SAVE $$!

This cooling package fits the following BMWs with the N51 engine and an auto transmission:
2008-2012 E82 BMW 128i SULEV
2007-2011 E90 BMW 328i 328xi 328i xDrive SULEV - Sedan
2007-2012 E91 BMW 328i 328xi 328i xDrive SULEV - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive SULEV - Coupe
2007-2013 E93 BMW 328i SULEV - Convertible
Note: not for cars that have the dealer-installed auxiliary heating option. Some of the hoses are different with that option. It's not a very common option in North America (except in parts of Canada) but there are hoses that are specific to that option.


Click on the options for your kit below and then click "update price" for your kit total.
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E82 128i, E9X 328i 6MT Cooling Overhaul Package
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:340252
Part#: TMS214377
In Stock
Sale - Save 14% $ 704.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 606.54 USD
Sale - Save 14%
$ 704.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 606.54 USD
This cooling overhaul will cover just about everything you could replace on the 328's cooling system. We start with the basic water pump and thermostat bundle. These are already vital to the health and durability of the N52 328i. But to properly maintain these cars for the long term, the rest of the cooling system must be refreshed and preventatively replaced. Here you can add a radiator, expansion tank, cooling hoses, and the BMW antifreeze. This package fits 328i/328xi with N52 engine and manual transmission.

The sophisticated electronics of the ECU and water pump means catastrophic overheating should be a thing of the past. But the downside is that the electronics can shut down without any warning or symptoms. And troubleshooting is equally frustrating since the water pump electronics are not readable or serviceable. There are several clues to a faulty thermostat or water pump - the fan runs at full speed all the time (even immediately on a cold start), pending (soft) fault code for low coolant flow, or the water pump can be heard running constantly. But when the pump fails it's an immediate shut down of the engine which can be a major inconvenience and lead to additional repairs that might have been avoided with preventative maintance. We recommend a full cooling system overhaul on the E90/E92 every 80-90,000 miles and to check for soft/pending codes at every 5,000 mile service .


Base Cooling Overhaul Package - Water Pump and Thermostat
(click to expand)
Includes:
+ Genuine BMW electric water pump, p/n 11517586925
+ mounting screws for water pump (set of 3), p/n 11510392553
+ OEM Behr thermostat, p/n 11537549476
+ Original BMW connecting hose from thermostat to water pump, p/n 11537521049
+ OEM-style hose clamps for hose (x 2)

The water pump on the N52 engine has more cooling responsibilities than ever before. The good news is that the pump only works when, and only as much, as it needs to. That means the system can actually stop the pump when it doesn't need to be running. The bad news is that it's now an electrical part, so a failure is usually immediate and with no warning. The preventative replacement is your only insurance from a very inconvenient and costly breakdown in the future. Plus you get the very latest BMW water pump design with any improvements they've made since your original pump was installed.
Cooling Hoses
(click to expand)
With regular driving the hoses should last a very long time. Even the plastic connectors seem to be holding up well. But as a preventative measure new hoses are recommended. We have also seen issues with re-using hoses as the spring connectors get weak over time and may not have the strength to hold the hose in place. They seem to have a tough time holding tension especially when they have been removed and reinstalled. In the interests of a thorough overhaul we recommend replacing these 328 water hoses during this job (see diagram):
  • 17127531579, upper radiator hose (A)
  • 17127564478, lower radiator hose (B)
  • 11537552396, water pump to engine ©
  • 11537545890, thermostat to cylinder head (includes new o-ring) (D)
    There are other hoses too but they are not often replaced during a radiator swap (radiator vent hose and heater core hose) and they don't see much wear. We offer these as well if you want a complete set (see Additional Items at the bottom of the page).
Expansion Tank Options
(click to expand)
The expansion tank on the 328 is not prone to failures (unlike previous 3-series cars) so a new one is not strictly required. There aren't many seams or stress points for it to crack and we haven't heard of too many issues. But we wanted to offer it as part of a complete overhaul in case you want to cover everything. Simiarly, the level sensor is not required unless you're getting erroneous 'low coolant' warnings from the dash/iDrive. We do strongly recommend replacing the cap because that is designed to be the weak point in the system. The cap is what regulates the pressure inside the system and it should be replaced every few years anyway.

BUY AS A PACKAGE AND SAVE $$!

This cooling package fits the following BMWs with the N52 engine and a manual transmission:
2008-2012 E82 BMW 128i
2007-2011 E90 BMW 328i 328xi 328i xDrive - Sedan
2007-2012 E91 BMW 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive - Coupe
2007-2013 E93 BMW 328i - Convertible


Click on the options for your kit below and then click "update price" for your kit total.
Show More Show Less
High Performance Cooling System Upgrade - E46 Non-M w/ Auto Transmiss...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:557310
Part#: E46NONMPCKT4
Back Ordered
$ 1,543.99

This product was last offered at the strikethrough price on
06-23-2026

$ 1,539.99 USD
$ 1,539.99 USD

If you plan to drive your BMW aggressively on the track, it is important that you upgrade your cooling system to avoid overheating. To ensure your BMW keeps cool on the track, we have built out our new High Performance Cooling System Upgrade kits. Featured in this kit is everything you will need to redo your cooling system from top to bottom with OEM components, with select stock components swapped out for the high performance alternative! This kit includes a high performance Mishimoto Radiator, for significantly better cooling than the stock radiator and full aluminum construction that won't crack from long term heat cycling, a performance Mishimoto 70*C thermostat, for lower temperature operation and increased cooling of the engine, and a Stewart High Performance Water Pump, for dramatically increased coolant flow at all RPMs. 

Additional items included in this kit:

  • OEM Replacement Coolant Hoses
  • OEM Expansion Tank, Cap, and Level Sensor
  • OEM Belts, Tensioners, and Pulleys
  • OEM Auxiliary Fan Switch
  • Genuine BMW Hardware for Easy Installation
  • ECS Tuning Aluminum Water Pump Pulley - For increased reliability over the stock composite pulley
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Complete Cooling System Overhaul Package - 4/2004-2005 Z4 2.5 3.0 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:339099
Part#: TMS16430
In Stock
Starting at $ 454.24 USD
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Starting at $ 454.24 USD
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This is a customizable cooling system overhaul kit, which starts off with the basic radiator and water pump and can be configured to replace all the M54 common cooling system failure parts in one package. This cooling system package is for the 2003-2005 Z4 Roadster.

The Z4 cooling system is much like that of the sister 3 series. Several of the primary cooling components are prone to failure within 60k miles (or less in many cases). A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the radiator & waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your cooling system. Available with our kit is an OEM Behr radiator, an Original BMW water pump (with updated composite impeller), thermostat (complete with housing), radiator cap, new hoses, and other essential cooling parts.

Optional items (which can be added below):
  • Radiator cap
  • Major cooling hoses
  • Original BMW antifreeze
  • Upgrade the water pump to a Stewart EMP High Performance pump
  • Add a new coolant expansion tank (known for cracking)
  • Include a new coolant level sensor (known for failing / throwing "check coolant" messages)
  • Include a new coolant temp sensor (located in the lower radiator hose) (re-using the old sensor and seal may lead to a leak)
  • Add a new thermostat for an automatic transmission (located with the expansion tank).
    This cooling system overhaul kit fits the following BMWs:
    4/2004-2005 E85 BMW Z4 2.5i Z4 3.0i

    Please put a check in the boxes next to the items you wish to order.
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    Basic Cooling System Service Kit - E39 540i (up to 09/1998)
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:557230
    Part#: E39540BCKT
    In Stock at Vendor
    Sale - Save 11% $ 449.99

    This product was last offered at the strikethrough price on
    04-21-2026

    $ 398.70 USD
    Free Shipping
    Sale - Save 11%
    $ 449.99

    This product was last offered at the strikethrough price on
    04-21-2026

    $ 398.70 USD
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    Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

    To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

    See kit contents below for all included components.

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    Cooling System overhaul Kit - E39 528i From 09/1998
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:554546
    Part#: 11517527910KT17
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    05-03-2026

    $ 1,004.52 USD
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    $ 1,004.52 USD

    This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the E39 528i with the M52 engine. 

    A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts. 

     

    This kit fits the following BMWs:

    09/1998 - 2000 E39 528i

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    Complete Cooling System Overhaul Package - 1997-1998 E39 528i ...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:338700
    Part#: TMS14414
    Ships in 1 Business Day
    $ 597.99

    This product was last offered at the strikethrough price on
    06-15-2026

    Starting at $ 588.16 USD
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    This is a compete cooling system overhaul kit, which includes all the common M52 cooling system failure parts bundled into a complete package. This cooling system package is for the 1997-1998 528i with the M52 engine with either the manual or automatic transmission.

    Much of the E39 cooling system is shared with the 3-series cars of the same era. Which means the potential for serious cooling system and engine-related failures. Several of the primary cooling components are prone to failure within 60k miles (or less in many cases). A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the radiator & waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your cooling system. Our kit includes one OEM Behr radiator, an Original BMW water pump (with updated composite impeller), thermostat, radiator cap, and new radiator hoses.

    Basic Kit Contents:
    17111702969, radiator (OEM Behr)
    11517527799, water pump (OE BMW)
    11537511580, 88�C thermostat (OEM Behr/Hella)
    11531740832, upper radiator hose (OEM Rein/CRP)
    11531740481, lower radiator hose (OEM Rein/CRP)
    17111427156, expansion tank hose (OEM Rein/CRP)
    17111742231, expansion tank cap (OEM Behr/Hella)

    Cooling Kit Options:
    E39 Water Pump Options
    (click to expand)
    OE BMW with composite impeller. The original BMW water pumps had plastic impellers which degraded and failed. The latest design uses composites that are much better and will not corrode. Compared to a metal impeller, the composite is lighter so it's more efficient and it will not wear out the bearings. We don't even offer the metal impeller pumps with this kit because the BMW composite one is so much better.
    Stewart high performance. The ultimate in M50 water pumps! It features a stainless steel impeller, heavy-duty bearings, a better o-ring seal, and flows 20% more than the stock pump. If indestructible is what you're looking for, this is the pump to go with. It also comes with a lifetime warranty for piece of mind.
    E39 Expansion Tank
    (click to expand)
    The original expansion tank is prone to cracks and leakage. Again - it's made from a weak plastic. The material has improved over the years but the only option remains an OEM plastic tank. It's a good idea to replace it if you're doing a whole overhaul. Don't re-use the original tank if you're going to the trouble of replacing everything else!
    E39 Thermostat Housing
    (click to expand)
    The original BMW plastic thermostat housing is brittle and does not seal well. We only sell it under protest. Instead we've been selling this aluminum housing for the last 20+ years. The aluminum does not have the same shortcomings as the plastic one. We made this item an option in case you already have the aluminum housing.

    Use the options below to build your cooling package.

    This cooling system overhaul kit fits the following BMWs:
    1997-1998 E39 BMW 528i
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    E82 128i N51 SULEV, E9X 328i N51 SULEV 6MT Cooling Overhaul Package ...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:340254
    Part#: TMS215326
    Ships in 2 Business Days
    Starting at $ 1,233.54 USD
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    Starting at $ 1,233.54 USD
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    This cooling overhaul will cover just about everything you could replace on the 328 SULEV's cooling system. We start with the basic water pump and thermostat bundle. These are already vital to the health and durability of the N51 328 SULEV. But to properly maintain these cars for the long term, the rest of the cooling system must be refreshed and preventatively replaced. Here you can add a radiator, expansion tank, cooling hoses, and the BMW antifreeze. This package fits 128/328 SULEV with N51 engine and manual transmission.

    The sophisticated electronics of the ECU and water pump means catastrophic overheating should be a thing of the past. But the downside is that the electronics can shut down without any warning or symptoms. And troubleshooting is equally frustrating since the water pump electronics are not readable or serviceable. There are several clues to a faulty thermostat or water pump - the fan runs at full speed all the time (even immediately on a cold start), pending (soft) fault code for low coolant flow, or the water pump can be heard running constantly. But when the pump fails it's an immediate shut down of the engine which can be a major inconvenience and lead to additional repairs that might have been avoided with preventative maintance. We recommend a full cooling system overhaul on the E90/E92 every 80-90,000 miles and to check for soft/pending codes at every 5,000 mile service .


    Base Cooling Overhaul Package - Water Pump and Thermostat
    (click to expand)
    Includes:
    + Genuine BMW electric water pump, p/n 11517586925
    + mounting screws for water pump (set of 3), p/n 11510392553
    + OEM Behr thermostat, p/n 11537549476
    + Original BMW connecting hose from thermostat to water pump, p/n 11537521049
    + OEM-style hose clamps for hose (x 2)

    The water pump on the N51 engine has more cooling responsibilities than ever before. The good news is that the pump only works when, and only as much, as it needs to. That means the system can actually stop the pump when it doesn't need to be running. The bad news is that it's now an electrical part, so a failure is usually immediate and with no warning. The preventative replacement is your only insurance from a very inconvenient and costly breakdown in the future. Plus you get the very latest BMW water pump design with any improvements they've made since your original pump was installed.
    Coolant Hoses
    (click to expand)
    With regular driving the hoses should last a very long time. Even the plastic connectors seem to be holding up well. But as a preventative measure new hoses are recommended. We have also seen issues with re-using hoses as the spring connectors get weak over time and may not have the strength to hold the hose in place. They seem to have a tough time holding tension especially when they have been removed and reinstalled. In the interests of a thorough overhaul we recommend replacing these 328 SULEV water hoses during this job (see diagram):
    • 17127531579, upper radiator hose (A)
    • 17127531581, lower radiator hose (B)
    • 11537552396, water pump to engine ©
    • 11537545890, thermostat to cylinder head (includes new o-ring) (D)
      There are other hoses too but they are not often replaced during a radiator swap (radiator vent hose and heater core hose) and they don't see much wear. We offer these as well if you want a complete set (see Additional Items at the bottom of the page).
    Expansion Tank Options
    (click to expand)
    The expansion tank on the 328 SULEV is not prone to failures (unlike previous 3-series cars) so a new one is not strictly required. There aren't many seams or stress points for it to crack and we haven't heard of too many issues. But we wanted to offer it as part of a complete overhaul in case you want to cover everything. Simiarly, the level sensor is not required unless you're getting erroneous 'low coolant' warnings from the dash/iDrive. We do strongly recommend replacing the cap because that is designed to be the weak point in the system. The cap is what regulates the pressure inside the system and it should be replaced every few years anyway.
    Coolant Temp Sensors
    (click to expand)
    There are two coolant temp sensors on the 328 SULEV - in the lower radiator hose and in the cylinder head. Both feed coolant temps to the ECU to regulate the water pump and cooling fan. You should replace the one in the lower radiator hose because it's one of the main sources for coolant leaks, especially when the old sensor is re-used in a new hose. The sensor in the cylinder head is not as prone to leaks and it's easily accessible so you don't have to replace it right away. But we offer it with the package in case you want to have a complete cooling system overahul.
    13621433077, coolant temp sensor (in lower radiator hose)
    13621433076, coolant temp sensor (in cylinder head, next to oil filter housing)

    BUY AS A PACKAGE AND SAVE $$!

    This cooling package fits the following BMWs with the N51 engine and a manual transmission:
    2008-2012 E82 BMW 128i SULEV
    2007-2011 E90 BMW 328i 328xi 328i xDrive SULEV - Sedan
    2007-2012 E91 BMW 328i 328xi 328i xDrive SULEV - Wagon
    2007-2013 E92 BMW 328i 328xi 328i xDrive SULEV - Coupe
    2007-2013 E93 BMW 328i SULEV - Convertible
    Note: not for cars that have the dealer-installed auxiliary heating option. Some of the hoses are different with that option. It's not a very common option in North America (except in parts of Canada) but there are hoses that are specific to that option.


    Click on the options for your kit below and then click "update price" for your kit total.
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    Basic Cooling System Service Kit - E9X M3 S65 - Dry
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:53891614
    Part#: 17112283500KT
    Ships in 2 Business Days
    New Item
    $ 540.99

    This product was last offered at the strikethrough price on
    07-08-2026

    $ 531.99 USD
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    $ 531.99 USD
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    E60 550i, E63 650i Manual Transmission Cooling Overhaul Package ...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:338775
    Part#: TMS216193
    Ships in 1-2 days
    $ 658.99

    This product was last offered at the strikethrough price on
    05-06-2026

    Starting at $ 643.99 USD
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    The cooling system is one of the major weak points on the N62 engine in the 550i/650i. The water pump itself won't last more than 100,000 miles in most cases and the engine itself is prone to coolant leaks from multiple locations. So a major 550i cooling system overhaul should be planned before the 100,000 mile mark. Aside from obvious leaks the 550i water pump will also squeal or screech indicating the bearings inside have worn. This package covers the water pump, thermostat, and radiator for the 2006-2010 E60 550i and E63 650i with a manual transmission.

    The entire cooling system on the 550i is susceptible to leaks and poor performance. The condition of the rest of the cooling system should be considered along with the water pump and thermostat. Replacing the water pump will expose the front of the V8 engine where more problem areas may appear so plan accordingly. The biggest problem is the V8 valley pan gaskets and inner coolant tube seals. The tube carrying coolant through the valley is prone to leaking and replacement is a major job (see our valley pan pipe kit here). Additional items recommended to be replaced during the water pump job are: cooling hoses, expansion tank and cap, temp sensors, drive belts, and pulleys and tensioners.

    Base 550i/650i Cooling Package includes:

    • OEM Behr radiator (17117519210)
    • OEM water pump (11517586779)
    • water pump pipe (back of pump to engine block) (11511439976)
    • OEM thermostat (11537586885)
    • BUY AS A PACKAGE AND SAVE $$!

      This item fits the following BMWs:
      2006-2010 E60 BMW 550i with manual transmission
      2006-2011 E63 BMW 650i with manual transmission
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    E60 528i/xi Auto Transmission Cooling Overhaul Package
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:340205
    Part#: TMS215350
    Ships in 2 Business Days
    Starting at $ 855.33 USD
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    Starting at $ 855.33 USD
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    This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the 2008-2010 E60 528i/528xi models with an automatic transmission (N52 engine).

    Much of the later E60 cooling system is strong and reliable compared to the previous generation 5-series models. But there is still the potential for serious cooling system and engine-related failures. On the N52 engine the electric water pump is the weakest link. It will fail without much warning and shut down the engine. Preventative replacement is the best course of action and the water pump and thermostat should be done before they reach 60,000 miles. Several other cooling components are due for replacement by 100,000 miles to prevent other breakdowns. A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system.

    Our base kit comes with the OEM Behr thermostat, Original BMW electric water pump with mounting screws, and the u-shaped hose between the pump and thermostat. From there you can add additional items to complete the overhaul - radiator, expansion tank, cap, and new radiator hoses..

    E60 528i Automatic Radiator Options. There are two styles of radiators for the E60 6-cylinder and automatic transmission: original and updated. You can use either radiator as long as you have the correct corresponding parts to go with it. Both radiators are still available from BMW or the OE supplier Behr. If it were up to us we would prefer the updated style because it won't cause any confusion down the road and it reduces the number of potential leak points by eliminating an unnecessary fitting.

    • Original, BMW #17117534914. This setup has an extra fitting for the engine oil heat exchanger along with a hose that attaches to the water pump pipe and heat exchanger. In order to use this radiator you must use the corresponding hose. This was the original setup as the car was built at the factory and is pictured in the radiator image to the right. At some point BMW stopped listing this part number in their official diagrams and used the 209 number below.
    • Updated, BMW #17117519209. This is the updated style from BMW. If your radiator was replaced at some point after 2010 it most likely has this radiator style. On this radiator they did away with the extra fitting for the heat exchanger. When looking at the ETK or RealOEM diagrams it will only list this radiator but with a note saying you also need two compensators (spacer blocks, #17117520335) and the hose (11537519494).

    Click here for diagrams of both E60 radiator options.

    E60 528i Cooling Hoses. There are a lot of hoses on the N52 engine. Not all of them need to be replaced during an overhaul but it would be a good idea. The hoses themselves don't wear but the metal spring clips on the connector lose their tension over time and that can lead to a leak. It's worse when re-using a hose after it's already been disconnected. Since our package includes the thermostat, water pump, and radiator we offer all of the hoses related to those components. Use the diagram on the right to see where each is connected in the engine bay. Evaluate your current hoses and then decide which ones to replace. One note about the lower radiator hose: when ordering a new hose you must order a new temp sensor. Do not reuse the original temp sensor as it will leak on the new hose.

    This item fits the following BMWs:
    2008-2010 E60 BMW 528i 528xi with automatic transmission

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    Cooling System Overhaul Kit - E9X M3 (04/2008+)
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:554725
    Part#: E9XM3CSO2KT
    Back Ordered
    $ 1,785.99

    This product was last offered at the strikethrough price on
    04-07-2026

    $ 1,732.99 USD
    $ 1,732.99 USD
    This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package.

    Cooling System overhaul Kit - E9X M3 (up to 04/2008)
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:554104
    Part#: 11517839062KT10
    Back Ordered
    $ 1,761.17

    This product was last offered at the strikethrough price on
    04-07-2026

    $ 1,718.51 USD
    $ 1,718.51 USD
    This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package.
    Basic Cooling System Service Kit - E30 M42 1.8L
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:557225
    Part#: E30M42BCKT
    Ships on Sep 29, 2026
    Sale - Save 2% $ 194.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 191.34 USD
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    Sale - Save 2%
    $ 194.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 191.34 USD
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    Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

    To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

    See kit contents below for all included components.

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    Cooling System Overhaul Kit - E53 X5 4.4/4.8
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:554541
    Part#: 17101439101KT2
    Ships on Jul 28, 2026
    Sale - Save 1% $ 1,003.51

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 989.52 USD
    Sale - Save 1%
    $ 1,003.51

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 989.52 USD
    This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the E53 with the N62 engine. 

    A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts.
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    Cooling System overhaul Kit - E30 318i 318is
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:554545
    Part#: 17111712835KT5
    Ships on Sep 29, 2026
    Sale - Save 2% $ 356.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 349.86 USD
    Free Shipping
    Sale - Save 2%
    $ 356.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 349.86 USD
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    This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the E30 with the M42 engine. 

    A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts. 

     

    This kit fits the following BMWs:

    318i 318is M42

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    Basic Cooling System Service Kit - E82/88 E9X N55 3.0L w/ Auto Transm...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:557227
    Part#: E8XE9XN55ABCKT
    Ships in 8 Business Days
    Sale - Save 24% $ 745.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 566.55 USD
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    Sale - Save 24%
    $ 745.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 566.55 USD
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    Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

    To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

    See kit contents below for all included components.

    Show More Show Less
    High Performance Cooling System Upgrade - E46 Non-M w/ Auto Transmiss...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:557308
    Part#: E46NONMPCKT2
    Back Ordered
    $ 1,520.99

    This product was last offered at the strikethrough price on
    06-15-2026

    $ 1,510.99 USD
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    $ 1,510.99 USD
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    If you plan to drive your BMW aggressively on the track, it is important that you upgrade your cooling system to avoid overheating. To ensure your BMW keeps cool on the track, we have built out our new High Performance Cooling System Upgrade kits. Featured in this kit is everything you will need to redo your cooling system from top to bottom with OEM components, with select stock components swapped out for the high performance alternative! This kit includes a high performance Mishimoto Radiator, for significantly better cooling than the stock radiator and full aluminum construction that won't crack from long term heat cycling, a performance Mishimoto 70*C thermostat, for lower temperature operation and increased cooling of the engine, and a Stewart High Performance Water Pump, for dramatically increased coolant flow at all RPMs. 

    Additional items included in this kit:

    • OEM Replacement Coolant Hoses
    • OEM Expansion Tank, Cap, and Level Sensor
    • OEM Belts, Tensioners, and Pulleys
    • OEM Auxiliary Fan Switch
    • Genuine BMW Hardware for Easy Installation
    • ECS Tuning Aluminum Water Pump Pulley - For increased reliability over the stock composite pulley
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    Cooling System overhaul Kit - E36 318i/is/ic
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:554551
    Part#: 11510393338KT8
    Ships on Sep 29, 2026
    $ 705.99 USD
    $ 705.99 USD

    This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the E36 318i/is/ic with the M44 engine. 

    A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts. 

     

    Show More Show Less

    Cooling System overhaul Kit - E36 318i/is/ic
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:554549
    Part#: 11510393338KT7
    Ships on Sep 29, 2026
    $ 744.99 USD
    Free Shipping
    $ 744.99 USD
    Free Shipping

    This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the E36 318i/is/ic with the M42 engine. 

    A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts. 

     

     

    Show More Show Less
    High Performance Cooling System Upgrade - E46 Non-M w/ Auto Transmiss...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:30861164
    Part#: 17137787039KT
    Back Ordered
    Sale - Save 10% $ 1,934.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 1,739.92 USD
    Sale - Save 10%
    $ 1,934.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 1,739.92 USD

    Complete Cooling System Overhaul Package - 1987 E30 325i/is/ic ...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:340132
    Part#: TMS16413
    Ships on Aug 24, 2026
    $ 283.99

    This product was last offered at the strikethrough price on
    05-17-2026

    Starting at $ 272.98 USD
    Starting at $ 272.98 USD
    This Cooling Kit for the 1987 E30 325i covers all of the major replacement parts for the original cooling system. We start with an OEM Behr radiator and then you choose the additional parts you need to replace next. Add hoses, sensors, water pumps, thermostats, gaskets, hose clamps, and more. We also sell the correct Original BMW antifreeze to finish off the job.

    Of the systems in your E30, the cooling system is not where you want to let slide or skip maintenance. Almost nothing will ruin your day more than an overheating engine and it's usually at the absolute worse time. Maintaining the cooling system is easy and you can do most or all of the work yourself with ordinary tools. There's no reason not to address a leaky or out of date cooling system right away.

    Top Turner Tip!
    On the 1987 325i, pay particular attention to the alternator fan blades and the clearance to the lower radiator hose. As the engine shifts on worn motor mounts, and the alternator twists on worn bushings, the cooling blades can slice right through the hose. Replace the alternator bushings and use our motor mount reinforcements. Or convert the whole system to the 1988+ cooling system which moves the lower hose to the other side of the radiator.

    To save you time and money, we recommend replacing major components with related parts.
    Radiator (manual: #17111468074; automatic: #17111468075)
    Upper (#11531286914) and lower (#11531279895) hoses to thermostat.
    Thermostat with o-ring and housing gasket (#11531713040).
    Water pump (#11519071562)
    Timing belt and tensioner (#09-9320-000).
    Associated hoses with each of the above.
     - hose from water pump to thermostat (#11531287651)
     - hose from expansion tank to water pump (#11531289257)
     - hose from throttle body to thermostat (#13541705568)
    V-belts with any of the above.

    Use the options below to build your package.

    This cooling package fits the following BMWs:
    1987 E30 BMW 325i 325ic 325is
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    High-Performance Cooling System Service Kit - Level 1
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:38229085
    Part#: 11517588885KT5
    Ships on Aug 17, 2026
    Sale - Save 8% $ 1,433.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 1,314.11 USD
    Sale - Save 8%
    $ 1,433.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 1,314.11 USD

    Due to weak rubber and plastic construction, vital cooling system parts are prone to premature failure. Key components, such as radiator hoses, the thermostat, and the expansion tank are particularly prone to cracks, leaks, and catastrophic failure, which can lead to overheating and potentially severe engine damage. Fortunately, our team of experts has assembled this kit of high-performance alternatives and high-quality OE replacement components, both tailored to safeguard your cooling system from failure and increase cooling system capability.

    The Turner Motorsport Level 1 Performance Cooling System Refresh Kit is the ultimate solution for ensuring long-term reliability and enhanced cooling performance. Each component in this comprehensive kit has been carefully selected by our team of enthusiasts to address common failure points and provide a robust, performance-oriented upgrade for your vehicle. By replacing aging factory parts with premium, high-performance alternatives, you’ll optimize cooling efficiency and safeguard your engine from the stress of overheating.

    Our comprehensive "Level 1" High-Performance Cooling System Service Kit includes:

    Turner Motorsport Heavy Duty Aluminum Expansion Tank Pierburg Full Aluminum Water Pump ECS Aluminized Water Pump Hose V2.0 Bremmen Parts Thermostat ECS Performance Silicone Radiator Hose Kit Genuine BMW Blue G48 Antifreeze (2 Gallons) Redline Water Wetter (12 oz.)

    Show More Show Less

    Basic Cooling System Service Kit - E9X 335i N55 w/ Manual Transmissio...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:557210
    Part#: E9XN55MBCKT
    Ships on Nov 18, 2026
    $ 1,129.99 USD
    Free Shipping
    $ 1,129.99 USD
    Free Shipping

    Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

    To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

    See kit contents below for all included components.

    Show More Show Less

    Basic Cooling System Service Kit - E60/61 535i/xi N54 3.0L
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:557208
    Part#: E6X535BCKT
    Ships on Nov 18, 2026
    $ 965.99 USD
    Free Shipping
    $ 965.99 USD
    Free Shipping

    Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

    To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

    See kit contents below for all included components.

    Show More Show Less
    E60 535i Manual Cooling Overhaul Package
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:338767
    Part#: TMS216178
    Ships on Nov 18, 2026
    Starting at $ 857.54 USD
    Free Shipping
    Starting at $ 857.54 USD
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    This cooling overhaul will cover just about everything you could replace on the 535's cooling system. We start with the basic water pump and thermostat bundle. These are already vital to the health and durability of the N54 engine. But to properly maintain these cars for the long term, the rest of the cooling system must be refreshed and preventatively replaced. Here you can add a radiator, expansion tank, 535 cooling hoses, and the BMW antifreeze. This package fits 535 with a manual transmission.

    The sophisticated electronics of the ECU and water pump means catastrophic overheating should be a thing of the past. But the downside is that the electronics can shut down without any warning or symptoms. And troubleshooting is equally frustrating since the water pump electronics are not readable or serviceable. There are several clues to a faulty thermostat or water pump - the fan runs at full speed all the time (even immediately on a cold start), pending (soft) fault code for low coolant flow, or the water pump can be heard running constantly. But when the pump fails it's an immediate shut down of the engine which can be a major inconvenience and lead to additional repairs that might have been avoided with preventative maintance. We recommend a full cooling system overhaul on the E60 535 every 80-90,000 miles and to check for soft/pending codes at every 5,000 mile service .


    Base Cooling Overhaul Package includes:
    + Genuine BMW electric water pump, p/n 11517588885 or 11517632426
    + mounting screws for water pump (set of 3), p/n 11517602123
    + OEM Behr thermostat, p/n 11537549476
    + Original BMW connecting hose from thermostat to water pump, p/n 11537545665
    + OEM-style hose clamps for hose (x 2)

    The water pump on the N54 engine has more cooling responsibilities than ever before. Not only must it provide cooling for the engine, but it's also pumping fluid used to cool the turbocharger oil and transmission oil. The good news is that the pump only works when, and only as much, as it needs to. That means the system can actually stop the pump when it doesn't need to be running. The bad news is that it's now an electrical part, so a failure is usually immediate and with no warning. The preventative replacement is your only insurance from a very inconvenient and costly breakdown in the future. Plus you get the very latest BMW water pump design with any improvements they've made since your original pump was installed.

    Cooling Hoses
    With regular driving the hoses should last a very long time. Even the plastic connectors seem to be holding up well. But as a preventative measure new hoses are recommended. We have also seen issues with re-using hoses as the spring connectors get weak over time and may not have the strength to hold the hose in place. They seem to have a tough time holding tension especially when they have been removed and reinstalled. In the interests of a thorough overhaul we recommend replacing these 335 water hoses during this job (see diagram):
  • 17127560968, upper radiator/radiator vent hose
  • 17127565075, lower radiator hose
  • 17127560973, return hose
    BUY AS A PACKAGE AND SAVE $$!

    This water pump package fits the following BMWs:
    2007-2010 E60 BMW 535i 535xi 535i xDrive manual transmission
    Click on the options for your kit below and then click "update price" for your kit total.
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    Basic Cooling System Service Kit - E82/88 E9X N54 3.0L w/ Manual Tran...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:557240
    Part#: E8XE9XN54BCKT2
    Back Ordered
    $ 1,037.99

    This product was last offered at the strikethrough price on
    04-06-2026

    $ 995.99 USD
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    $ 995.99 USD
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    Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

    To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

    See kit contents below for all included components.

    Show More Show Less


    Cooling System overhaul Kit - E82/88 135i E9X 335i/xi/ix N54 Automati...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:554111
    Part#: 11510392553RKT3
    Back Ordered
    Sale - Save 2% $ 1,660.99

    This product was last offered at the strikethrough price on
    04-10-2026

    $ 1,632.70 USD
    Sale - Save 2%
    $ 1,660.99

    This product was last offered at the strikethrough price on
    04-10-2026

    $ 1,632.70 USD

    This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the E82/88 135i or E90/92/93 335i/xi/is with the N54 engine. 

    A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts. 

    For vehicles with automatic or DCT transmission only

    Show More Show Less
    Cooling System overhaul Kit - E82/88 135i E9X 335i/xi/ix N54 manual t...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:554121
    Part#: 11537558522KT3
    Back Ordered
    Sale - Save 5% $ 1,573.99

    This product was last offered at the strikethrough price on
    04-10-2026

    $ 1,500.75 USD
    Sale - Save 5%
    $ 1,573.99

    This product was last offered at the strikethrough price on
    04-10-2026

    $ 1,500.75 USD

    This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the E82/88 135i or E90/92/93 335i/xi/is with the N54 engine. 

    A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts. 

    For vehicles with manual transmission only

    Show More Show Less
    Cooling System overhaul Kit - E30 325i/is/ix/e upto 1988
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:554131
    Part#: 11531286914KT2
    Back Ordered
    $ 957.99

    This product was last offered at the strikethrough price on
    05-17-2026

    $ 953.99 USD
    $ 953.99 USD

    This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the E30 325 with the M20 engine. 

    A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts. 

    This water pump fits the following BMWs: 
    1986-1988 E30 BMW 325e 325es 325i 325ic 325is 325ix 

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    High Performance Cooling System Upgrade - E9X 335i N54 w/ Manual Tran...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:557323
    Part#: E9XN54PCKT
    Back Ordered
    $ 2,160.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 2,154.64 USD
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    $ 2,154.64 USD
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    If you plan to drive your BMW aggressively on the track, it is important that you upgrade your cooling system to avoid overheating. To ensure your BMW keeps cool on the track, we have built out our new High Performance Cooling System Upgrade kits. Featured in this kit is everything you will need to redo your cooling system from top to bottom with OEM components, with select stock components swapped out for the high performance alternative! This kit includes a high performance CSF Aluminum Radiator for significantly better cooling than the stock radiator and full aluminum construction that won't crack from long term heat cycling, and a Mishimoto Performance 74*C thermostat for lower temperature operation and increased cooling of the engine. 

    Additional items included in this kit:

    • OEM Replacement Coolant Hoses
    • ECS Tuning Silicone Coolant Outlet Hose with ECS Billet Thermostat Hose Adapter
    • ECS Tuning Aluminized Water Pump Hose
    • OEM Expansion Tank, Cap, and Level Sensor
    • OEM Belts, Tensioners, and Pulleys
    • OEM Auxiliary Fan Switch
    • OEM VDO Water Pump
    • Genuine BMW Hardware for Easy Installation
    • Genuine BMW Antifreeze/Coolant (Undiluted) - 2 Gallons
    Show More Show Less

    Cooling System overhaul Kit - E53 3.0i Manual Transmission
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:554543
    Part#: 11517527910KT16
    Back Ordered
    Sale - Save 1% $ 1,025.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 1,013.43 USD
    Sale - Save 1%
    $ 1,025.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 1,013.43 USD

    This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the E53 with the M54 engine. 

    A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts. 

     

    This kit fits the following BMWs:

    2000 - 0/2002 - E53 3.0i with manual transmission 

    Show More Show Less
    Cooling System overhaul Kit - E53 3.0i Manual Transmission
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:554542
    Part#: 11517527910KT15
    Back Ordered
    Sale - Save 1% $ 1,006.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 993.49 USD
    Sale - Save 1%
    $ 1,006.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 993.49 USD

    This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the E53 with the M54 engine. 

    A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts. 

     

    This kit fits the following BMWs:

    09/2002 - 2006 - E53 3.0i with manual transmission 

    Show More Show Less

    High Performance Cooling System Upgrade - E9X 335i N54 w/ DCT/Auto Tr...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:557324
    Part#: E9XN54PCKT2
    Back Ordered
    $ 2,180.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 2,177.38 USD
    Free Shipping
    $ 2,177.38 USD
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    If you plan to drive your BMW aggressively on the track, it is important that you upgrade your cooling system to avoid overheating. To ensure your BMW keeps cool on the track, we have built out our new High Performance Cooling System Upgrade kits. Featured in this kit is everything you will need to redo your cooling system from top to bottom with OEM components, with select stock components swapped out for the high performance alternative! This kit includes a high performance CSF Aluminum Radiator for significantly better cooling than the stock radiator and full aluminum construction that won't crack from long term heat cycling, and a Mishimoto Performance 74*C thermostat for lower temperature operation and increased cooling of the engine. 

    Additional items included in this kit:

    • OEM Replacement Coolant Hoses
    • ECS Tuning Silicone Coolant Outlet Hose with ECS Billet Thermostat Hose Adapter
    • ECS Tuning Aluminized Water Pump Hose
    • OEM Expansion Tank, Cap, and Level Sensor
    • OEM Belts, Tensioners, and Pulleys
    • OEM Auxiliary Fan Switch
    • OEM VDO Water Pump
    • Genuine BMW Hardware for Easy Installation
    • Genuine BMW Antifreeze/Coolant (Undiluted) - 2 Gallons
    Show More Show Less
    Cooling System Overhaul Kit - E53 3.0i Automatic transmission ...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:554557
    Part#: 11517527910KT18
    Back Ordered
    Sale - Save 1% $ 955.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 944.56 USD
    Sale - Save 1%
    $ 955.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 944.56 USD

    This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the E53 with the M54 engine. 

    A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts. 

     

    This kit fits the following BMWs:

    2000 - 09/2002 - E53 3.0i with automatic transmission 

    Show More Show Less

    Basic Cooling System Service Kit - E30 M20 2.5L 2.7L (09/1987+) ...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:557228
    Part#: E30M20BCKT2
    Back Ordered
    Sale - Save 4% $ 323.99

    This product was last offered at the strikethrough price on
    06-30-2026

    $ 310.06 USD
    Free Shipping
    Sale - Save 4%
    $ 323.99

    This product was last offered at the strikethrough price on
    06-30-2026

    $ 310.06 USD
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    Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

    To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

    See kit contents below for all included components.

    Show More Show Less

    Cooling System Overhaul Kit - E53 3.0i Automatic transmission ...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:554559
    Part#: 11517527910KT19
    Back Ordered
    Sale - Save 2% $ 860.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 847.03 USD
    Sale - Save 2%
    $ 860.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 847.03 USD

    This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the E53 with the M54 engine. 

    A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts. 

     

    This kit fits the following BMWs:

    09/2002 - 2006 - E53 3.0i with automatic transmission 

    Show More Show Less
    Complete Cooling System Overhaul Package - 1999-2003 E39 525i 528i 53...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:338701
    Part#: TMS14415
    Back Ordered
    Starting at $ 708.50 USD
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    Starting at $ 708.50 USD
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    This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the 1999-2000 528i with the M52TU engine and the 2001-2003 525i and 530i with the M54 engine. This package applies to cars equipped with either the manual or automatic transmission.

    Much of the later E39 cooling system is strong and reliable and doesn't suffer the same types of problems associated with earlier E39 and E36 systems. But there is still the potential for serious cooling system and engine-related failures. Several of the primary cooling components are prone to failure within 80k miles (or less in many cases). A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Our kit includes an OEM Behr radiator, an Original BMW water pump (with updated composite impeller), thermostat with housing, radiator cap, and new radiator hoses.

    Optional items (which can be added below):
    - Original BMW antifreeze
    - Upgrade the water pump to a Stewart EMP High Performance pump
    - Add a new coolant expansion tank (known for cracking)
    - Add a new coolant level sensor (known for failing / throwing "check coolant" messages)
    - Add a new coolant temp sensor (located in lower radiator hose and the seal ring may cause leaks if re-used)

    This cooling system overhaul kit fits the following BMWs:
    1999-2003 E39 BMW 525i 528i 530i
    Show More Show Less
    Complete Cooling System Overhaul Package - 1997-1998 E39 540i ...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:338706
    Part#: TMS14416
    Back Ordered
    Sale - Save 3% $ 660.99

    This product was last offered at the strikethrough price on
    06-13-2026

    Starting at $ 640.70 USD
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    Sale - Save 3%
    $ 660.99

    This product was last offered at the strikethrough price on
    06-13-2026

    Starting at $ 640.70 USD
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    This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the 1997-1998 540i with the M62 4.4-liter engine (non-VAN0S). This package applies to cars equipped with either the manual or automatic transmission (select the appropriate parts in the menu below).

    A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system.

    Basic Kit Contents:
    1711702969, radiator (OEM Behr)
    11510393340, water pump (OEM)
    13621703993, coolant temp sensor (located in the water pump housing)
    11531437526, thermostat with housing and sensor (OEM Behr/Hella)
    11531745595, upper radiator hose (OEM)
    11531741409, lower radiator hose (OEM)
    11531741404, expansion tank hose (OEM)
    17111741167, expansion tank (OEM Behr)
    17111742231, expansion tank cap (OEM Behr)

    Cooling Kit Options:
    540 Water Pump Options
    (click to expand)
    There are three versions of the water pump for the early 1997-1998 540i: OEM plastic impeller, updated metal impeller, and the more recently updated composite impeller. We recommend either the metal or composite impeller. These are what we use the most in our shop and what our technicians are comfortable with. On more recent models, BMW has used the composite impeller as original. There doesn't seem to be evidence of the plastic failing on this design (it did on the E36 3-series) but we feel most comfortable with the other options. Both the metal and composite manufacturers are OEM for BMW.

    Use the options below to build your cooling package.

    Buy as a package and save $$$!

    This cooling system overhaul kit fits the following BMWs:
    1997-1998 E39 BMW 540i
    Show More Show Less