Packaged by Turner BMW Cooling System Parts & Accessories for BMW 3 Series E91 (2006-2012)

Water Pump And Thermostat Kit - BMW N52 3.0L

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T#:17073598

Part#: 11537549476KT

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05-03-2026

$ 318.74 USD

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Includes everything you may need to replace your water pump and thermostat.

Water Pump And Thermostat Kit

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T#:5376274

Part#: 11517586925TKT

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Sale - Save 25% $ 448.99

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05-03-2026

$ 336.73 USD

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Everything you need to replace your water pump and thermostat. The water pumps in these BMW models are known for failure near 80,000 miles is a very common issue often times leaving the owner stranded. The aftermarket kit offered provides a single stop for water pump and thermostat replacement needs to save the search and get you back on the road. Kit includes: Mahle-Behr thermostat Water pump Genuine BMW coolant thermostat to water pump hose Mounting hardware required for both the thermostat and water pump

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Cooling System Hose Kit

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T#:24212306

Part#: E9XN52CHKT

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Sale - Save 6% $ 189.99

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05-03-2026

$ 178.59 USD

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$ 189.99

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$ 178.59 USD

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Replace your cooling system hoses with this complete kit including coolant

E9X 325i/330i Auto Cooling Overhaul Package

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T#:340245

Part#: TMS214380

In Stock

Sale - Save 25% $ 426.99

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

Starting at $ 321.80 USD

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Sale - Save 25%

$ 426.99

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

Starting at $ 321.80 USD

Add to Wish List

This cooling overhaul will cover just about everything you could replace on the 325/330'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 325/330i. 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 325/330 cooling hoses, and the BMW antifreeze. This package fits 325i/330i/xi 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 325/330 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 325/330 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 E90 325/330 - 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 N52 engine and an auto transmission:
2006-2006 E90 BMW 325i 325xi 330i 330xi - Sedan
2006-2006 E91 BMW 325xi - Wagon

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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Cooling System overhaul Kit - E9X 328i/xi (W/ Automatic Trans) ...

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T#:554106

Part#: 17137607482KT8

Ships in 1-2 days

Sale - Save 5% $ 1,096.99

This product was last offered at the strikethrough price on
01-03-2026

$ 1,037.53 USD

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$ 1,096.99

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$ 1,037.53 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 E90/92/93 328i/328xi with the N52 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:

2007-2012 E90/92/93 328i, 328xi with Automatic Transmission

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Basic Cooling System Service Kit - E9X 328i/xi w/ Manual Transmission...

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T#:557224

Part#: E9X328MBCKT

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Sale - Save 5% $ 674.60

This product was last offered at the strikethrough price on
04-17-2026

$ 638.79 USD

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$ 674.60

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$ 638.79 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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E9X 325i/330i 6MT Cooling Overhaul Package

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:340246

Part#: TMS214376

In Stock

Sale - Save 25% $ 426.99

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

Starting at $ 321.80 USD

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Sale - Save 25%

$ 426.99

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

Starting at $ 321.80 USD

Add to Wish List

This cooling overhaul will cover just about everything you could replace on the 325/330'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 325/330. 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 325/330 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.

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 325/330 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 325/330 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 E90 325/330 - 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 N52 engine and a manual transmission:
2006-2006 E90 BMW 325i 325xi 330i 330xi - Sedan
2006-2006 E91 BMW 325xi - Wagon

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

T#:340253

Part#: TMS215325

In Stock

Sale - Save 7% $ 1,280.99

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

Starting at $ 1,186.79 USD

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Sale - Save 7%

$ 1,280.99

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

Starting at $ 1,186.79 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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Water Pump and Thermostat Package - N51/N52 Engine - E82 128i, E9X 32...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:42873693

Part#: TMS206099GKT

In Stock

$ 728.38 USD

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$ 728.38 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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E82 128i, E9X 328i 6MT Cooling Overhaul Package

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:340252

Part#: TMS214377

In Stock

Sale - Save 18% $ 740.99

This product was last offered at the strikethrough price on
01-03-2026

Starting at $ 605.79 USD

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Sale - Save 18%

$ 740.99

This product was last offered at the strikethrough price on
01-03-2026

Starting at $ 605.79 USD

Add to Wish List

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)
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

E82 128i, E9X 328i Auto Cooling Overhaul Package

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:340251

Part#: TMS214378

In Stock

Sale - Save 17% $ 621.99

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

Starting at $ 518.78 USD

Add to Wish List

Sale - Save 17%

$ 621.99

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

Starting at $ 518.78 USD

Add to Wish List

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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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

T#:557241

Part#: E9X328BCKT

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Sale - Save 6% $ 711.99

This product was last offered at the strikethrough price on
03-24-2026

$ 671.96 USD

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Sale - Save 6%

$ 711.99

This product was last offered at the strikethrough price on
03-24-2026

$ 671.96 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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E82 128i N51 SULEV, E9X 328i N51 SULEV 6MT Cooling Overhaul Package ...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:340254

Part#: TMS215326

Ships in 1-2 days

Sale - Save 9% $ 1,059.99

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

Starting at $ 962.79 USD

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Sale - Save 9%

$ 1,059.99

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

Starting at $ 962.79 USD

Add to Wish List

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)
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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Packaged by Turner BMW Cooling System Parts & Accessories for BMW 3 Series E91 (2006-2012)

Sub-Categories

Water Pump And Thermostat Kit - BMW N52 3.0L

Water Pump And Thermostat Kit

Cooling System Hose Kit

E9X 325i/330i Auto Cooling Overhaul Package

Cooling System overhaul Kit - E9X 328i/xi (W/ Automatic Trans) ...

Basic Cooling System Service Kit - E9X 328i/xi w/ Manual Transmission...

E9X 325i/330i 6MT Cooling Overhaul Package

E82 128i N51 SULEV, E9X 328i N51 SULEV Auto Cooling Overhaul Package ...

Water Pump and Thermostat Package - N51/N52 Engine - E82 128i, E9X 32...

E82 128i, E9X 328i 6MT Cooling Overhaul Package

E82 128i, E9X 328i Auto Cooling Overhaul Package

Basic Cooling System Service Kit - E9X 328i/xi N52 3.0L w/ Auto Trans...

E82 128i N51 SULEV, E9X 328i N51 SULEV 6MT Cooling Overhaul Package ...

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