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Packaged by Turner BMW Cooling System Parts & Accessories

The cooling system is arguably the weakest point in numerous BMWs. If you drive an aging BMW or plan on taking your car to the track like we do, we recommend beefing up your cooling system before going to the track. Generally, the main components in your cooling system that are prone to failure include the following: expansion tank, factory hoses, water pump, thermostat, fan (especially if your vehicle comes factory with a clutch fan), and radiator. Factory BMW expansion tanks are plastic and prone to either breaking off at connection points or combusting. As factory rubber hoses age they either crack or break over time - we offer silicone cooling hose upgrades for most applications to avoid future failures. If you have an older vehicle, your water pump likely comes from the factory with a plastic impeller - we offer upgraded water pumps with metal impellers that are far more reliable. Newer model BMWs utilize electric water pumps - BMW spent millions of dollars engineering these water pumps, but they fail so often that we recommend replacing at 60,000 mile service intervals to avoid being stranded on the side of the road. In terms of thermostats, we offer various upgraded thermostats for racing applications. If your BMW utilizes a clutch fan from the factory, we have several options available in terms of universal electric fans - we recommend replacing these to avoid sending brittle plastic fan blades through your hood. For radiators, we recommend swapping out your radiator for one that does not use plastic connection points like your factory radiator.

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E9X 325i/330i Auto Cooling Overhaul Package
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Packaged by Turner - Corporate Logo
T#:340245
Part#: TMS214380
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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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Coolant Expansion Tank - E46 (non-M), X3, X5 3.0
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:338020
Part#: 17117573781
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Sale - Save 9% $ 140.99

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Starting at $ 128.98 USD
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This coolant reservoir is for the non-M E46 3-series models from 1999-2006 (M3 takes a different expansion tank). We have found that the expansion tanks should be replaced based on age as well as condition. Expansion tanks seem to have a lifespan of less than six years before they show signs of fatigue and wear. Pre-emptively replacing the expansion tank as part of an overall maintenance plan can prevent you from getting stranded from a sudden failure later on. This is the most recent expansion tank design from Hella-Behr, the OEM supplier to BMW. It replaces the original BMW part number 17137787039.

Other items to consider replacing at the same time are the radiator cap, coolant level sensor, lower radiator hose, coolant temp sensor in the lower hose, and the hose clamps. If your car has an automatic transmission you should also replace the oil cooler thermostat in the radiator frame, which is a common source for leaks.

This coolant expansion tank fits:

1999-2006 E46 3 series - 323i, 323Ci, 325i, 325Ci, 325xi, 328i, 328Ci, 330i, 330Ci & 330xi (**no M)
2004-2008 X3 SAV - X3 2.5, X3 3.0, X3 3.0si
2000-2005 X5 SAV - X5 3.0
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Thermostat Replacement Kit - F01, F06, F07, F10, F12, F13
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:41289768
Part#: 115376011591TKT
In Stock
$ 179.99 USD
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Everything you need to replace your thermostat with a high quality aftermarket unit on your F chassis BMW!

Cooling hose kit - with ECS Silicone radiator hoses
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:15777297
Part#: 115317263449-KT
Ships in 1 Business Day
Sale - Save 22% $ 221.99

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$ 173.34 USD
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Each kit includes all the hoses and hardware you will need to replace your old, cracked hoses. Kit includes: Upper & lower ECS Silicone radiator hoses Heater hoses Throttle body hoses Expansion tank hoses Stainless steel hose clamps
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Water Pump And Thermostat Kit - E70 X5 3.0si X5 xDrive30i
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:554064
Part#: 11517586925KT13
Ships in 1 Business Day
$ 516.99 USD
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The water pumps BMW's should be serviced near 80,000 miles and may become an 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:

  • Thermostat
  • Water pump
  • Coolant
  • Mounting hardware required for the water pump

 

 

This water pump fits the following BMWs:

E70 X5 3.0si X5 xDrive30i without adaptive drive pr 4 zone climate control 

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Packaged by Turner - Corporate Logo
T#:557221
Part#: E39528BCKT
Ships in 5 Business Days
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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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Packaged by Turner - Corporate Logo
T#:557311
Part#: E46NONMPCKT3
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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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OEM Coolant Expansion Tanks Kit - F22/23 F3X B48 B58
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:27605427
Part#: 17138677649TKT
Ships in 2 Business Days
Sale - Save 3% $ 208.99

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$ 202.62 USD
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Genuine BMW expansion tanks have a bad habit of failing after a few years. This has primarily been caused by the plastic construction of the expansion tanks. After enough heat cycles, the plastic becomes brittle and can crack, causing coolant to leak out and air to enter the coolant system. If a failing expansion tank is not addressed soon enough, the coolant loss can lead to an overheating engine. This kit includes two brand new high quality expansion tanks and caps
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Coolant Expansion Tank - E36/E39/Z3 6 cylinder 1992-1998
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:338018
Part#: 17111723520
Ships in 1 Business Day
$ 97.99

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This high quality BEHR brand expansion tank is used on M50, M52, S50 and S52 engines, and is a common failure item on all E36 3 series with 6 cylinder engines (325/328/323 and M3) 1992-1999, Z3 with 2.8 liter, MZ3 Roadster/Coupe (S52), and E39 528i from 1997-1998. BEHR was the original equipment supplier to BMW, so you know the BEHR made expansion tank will be the highest quality available. Be leary of competitors selling this part for less -- is it a BEHR? Probably not. We only carry the BEHR brand expansion tank as it is the only one we use in our own BMWs.

If you are overhauling your coolant system, now is the time to consider preventative replacing this expansion tank. These are known to go bad, causing a leak which can leave you stranded. We have found that the expansion tanks should be replaced based on age as well as condition. Expansion tanks seem to have a lifespan of less than six years before they show signs of fatigue and wear. Pre-emptively replacing the expansion tank as part of an overall maintenance plan can prevent you from getting stranded from a sudden failure later on.

Need a new coolant level sensor too? If your coolant level sender is bad, your on board computer will constantly display a "low coolant" message (unless your coolant is actually low...). If you're replacing your expansion tank, now is a great time to replace this failure prone sensor. If you want a new coolant level sensor, simply choose from the option below. Because there are different sensors for different year/model BMWs, please be as specific as possible when you give us your car info during checkout (model, year, production date). Thanks!


This item fits the following BMWs:
1992-1998 E36 BMW 323ic 325i 325is 325ic 328i 328is 328ic M3
1997-1998 E39 BMW 528i
1997-1998 Z3 BMW Z3 2.8
1998-2000 Z3 BMW M Roadster M Coupe (S52)
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Water Pump - E39 540i E38 740i/il E53 X5 4.4i 4.6is
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:348558
Part#: 11510393336DK
Ships in 3 Business Days
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Don't take your car's cooling system for granted!One of the biggest weak points is the cooling system. Replacing your water pump will go a long way for keeping your car on the road and operating properly. This water pump fits BMW 1999-2001 E38 740i/740iL, 1999-2003 E39 540i, 1999-2003 E53 X5 4.4i and 4.6is with M62TU 4.4L (4.6L for the 4.6is) engine.

Choose from a water pump with a metal or composite impeller.
This water pump comes complete with housing profile gasket and o-rings.

This item fits the following BMWs:
1999-2003  E39 BMW  540i 540i touring
1999-2001  E38 BMW  740i 740il
2000-2003  E53 BMW  X5 4.4i X5 4.6is
2000-2003  E52 BMW  Z8 Alpina
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Packaged by Turner - Corporate Logo
T#:338705
Part#: TMS16592
Ships in 3 Business Days
Sale - Save 5% $ 171.99

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Starting at $ 163.48 USD
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The oil cooler/heat exchanger for the automatic transmission is one of the most overlooked sections of the 540i and 740i cooling system. The cooler (heat exchanger) is a part of the overall cooling system and uses coolant circulated from the regular cooling system to cool the transmission oil running through this small cooling block. Some of the hoses are shared with the rest of the cooling system as well. The E38/E39 heat exchanger is located along the driver's side frame rail and is accessed from the wheel well. We recommend servicing or cleaning the heat exchanger along with any cooling system overhaul. Or if you're having transmission faults (especially for temperature) you may want to clean the transmission cooler anyway and these hoses will be a nice finishing touch.

Replacing or cleaning the heat exchanger components could lead to better shifting of the automatic as the cooler itself can become clogged. If you're experiencing harder or hesitating shifts, and the internal transmission temperature is rising without being regulated, the components in this system are the likely cause. Staying on top of the cooling needs of the transmission will help prevent a very costly transmission repair in the future. These hoses are easily replaced and you can clean the heat exchanger easily with brake cleaner and some brushes.

Included in this handy package are:
  • 11531711381 - transmission cooling hose from water pump to radiator (with t-connector)
  • 11531711385 - transmission cooling hose from radiator to cooler
  • 11531711384 - transmission cooling hose from cooler to water pump
  • 11537511207 - transmission cooling hose from cooler to chassis
  • hose clamp
  • o-ring


    This hose set fits the following BMWs:
    1999-2003 E39 BMW 540i
    1999-2001 E38 BMW 740i 740il
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    Packaged by Turner - Corporate Logo
    T#:338704
    Part#: TMS14417
    Ships on Oct 7, 2026
    Sale - Save 9% $ 773.99

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    05-03-2026

    Starting at $ 705.77 USD
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    This product was last offered at the strikethrough price on
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    Starting at $ 705.77 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 1999-2003 540i with the M62TU VAN0S 4.4-liter engine. 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. Our bundled package includes the following:
  • OEM Behr radiator (select for manual or automatic transmission)
  • OEM water pump (choose either the metal or composite impeller)
  • OE BMW coolant temp sensor (located in the water pump housing)
  • OEM Behr thermostat with housing and sensor
  • OEM Behr expansion tank with cap
  • OE BMW upper and lower radiator hoses with expansion tank hose
    Optional items (which can be added below):
    - OE BMW antifreeze
    - Add a new coolant level sensor (known for failing / throwing "check coolant" messages)
    - Replace the heat exchanger coolant lines for the automatic transmission
    - Add a new fan clutch

    Buy as a package and save $$$!

    This cooling system overhaul kit fits the following BMWs:
    1999-2003 E39 BMW 540i
    1999-2001 E38 BMW 740i 740il
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    Packaged by Turner - Corporate Logo
    T#:338714
    Part#: TMS14418
    Ships in 1 Business Day
    $ 1,201.99

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

    Starting at $ 1,132.44 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 1999-2003 E39 M5 with the S62 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. Our bundled package includes the following:
  • OEM Behr radiator
  • OEM Laso or OE BMW water pump with gasket
  • OE BMW coolant temp sensor (located in the water pump housing)
  • OEM Behr thermostat with o-ring
  • OE BMW o-rings for the inner coolant tubes
  • OE BMW expansion tank cap
  • OE BMW upper and lower radiator hoses with OE-style clamps
  • OE BMW expansion tank hose with OE-style clamps
    Optional items (which can be added below):
    - OE BMW antifreeze
    - Add a new coolant level sensor (known for failing / throwing "check coolant" messages)
    - Add a new plastic expansion tank (if it's never been changed it's a risk of a crack or leak)
    - Add a new fan clutch

    Buy as a package and save $$$!

    This cooling system overhaul kit fits the following BMWs:
    1999-2003 E39 BMW M5
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    Packaged by Turner - Corporate Logo
    T#:30397451
    Part#: 11531251041KT2
    Ships in 2 Business Days
    $ 223.99

    This product was last offered at the strikethrough price on
    05-07-2026

    $ 222.99 USD
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    A well-known issue in BMW models is the water pump, which typically requires servicing every 60,000 miles. To ensure your vehicle's cooling system remains in peak condition, it's also advisable to replace the thermostat during this maintenance. Thankfully, Turner Motorsport has streamlined this process by combining all the necessary parts into one convenient kit.

    If you're aiming to maintain and boost your BMW's cooling system, look no further than this premium kit, expertly assembled by the enthusiasts at Turner Motorsport!

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    Turbo Coolant Line Kit - F70, E71, F15, F16
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:41661213
    Part#: 11537577014TKT
    Ships in 2 Business Days
    Sale - Save 8% $ 342.99

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

    $ 316.08 USD
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    Sale - Save 8%
    $ 342.99

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    Packaged by Turner - Corporate Logo
    T#:554106
    Part#: 17137607482KT8
    In Stock
    Sale - Save 4% $ 1,075.99

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

    $ 1,038.29 USD
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    This product was last offered at the strikethrough price on
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    $ 1,038.29 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 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 M3 S65
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:557214
    Part#: E9XM3BCKT
    Ships in 2 Business Days
    $ 614.99

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

    $ 552.99 USD
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    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.
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    Basic Cooling System Service Kit - E9X M3 S65 - Dry
    10X Entries Into Our F80 M3 Sweepstakes
    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

    $ 524.99 USD
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    $ 524.99 USD
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    Packaged by Turner - Corporate Logo
    T#:30463918
    Part#: 11510393340KT3
    Ships in 2 Business Days
    $ 266.99 USD
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    $ 266.99 USD
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    Maintain your BMW's cooling system and avoid costly repairs with our all-inclusive Water Pump and Thermostat Replacement Kit, expertly crafted by enthusiasts at Turner Motorsport. Designed specifically for your BMW model, this kit ensures proper engine operation at optimal temperatures, preventing overheating and extending engine life.

    Key Benefits:

    Comprehensive Kit: Simplify your cooling system overhaul with all necessary components in one package. High-Quality Parts: Each component meets or exceeds OEM standards, ensuring reliable performance and longevity. Optimal Cooling Performance: Regular water pump and thermostat replacement every 60,000 miles maintains peak cooling efficiency. Enhanced Reliability: Premium components like the Wahler Thermostat and Graf Water Pump ensure durable, long-lasting performance. Why Choose This Kit:

    Maximize Cooling System Performance: Replacing your water pump and thermostat simultaneously ensures your BMW’s cooling system operates efficiently. Protect Your Engine: Properly flushing and refilling your cooling system with Genuine BMW coolant guarantees optimal freeze protection and corrosion resistance. Convenient and Cost-Effective: Combining all essential parts in one kit simplifies maintenance and ensures a thorough, lasting repair. Planning a cooling system overhaul? Opt for this comprehensive thermostat and water pump replacement kit for a lasting repair.

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    Coolant Hose Kit
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:15777301
    Part#: 11531718980-KT
    Ships in 4 Business Days
    Sale - Save 3% $ 160.99

    This product was last offered at the strikethrough price on
    06-16-2026

    $ 156.77 USD
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    06-16-2026

    $ 156.77 USD
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    Over the years, heat and use take their toll on your rubber cooling hoses. This convenient kit includes all of the hoses that run between your radiator, water pump, thermostat, and expansion tank, as well as new hose clamps. Heater hoses are not included, but are available separately on the website.
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    Packaged by Turner - Corporate Logo
    T#:557927
    Part#: E46M3BCKT1
    Ships in 4 Business Days
    Sale - Save 11% $ 675.99

    This product was last offered at the strikethrough price on
    07-15-2026

    $ 603.81 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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    Packaged by Turner - Corporate Logo
    T#:48160254
    Part#: 11515A81BE9KT2
    Ships in 2 Business Days
    $ 810.99 USD
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    It is important that your coolant system is serviced at regular intervals to ensure a long life. Over time, coolant systems are exposed to high temperatures and repeated thermal cycling, which causes warping, cracking, and hardening of plastics and rubber components in the coolant system. This can lead to coolant leaks and overheating, which can result in extensive engine damage if not resolved in a timely manner. This Water Pump & Thermostat kit helps to address a few of the most problematic parts, replacing these items entirely to keep your cooling system running optimally and efficiently.
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    Packaged by Turner - Corporate Logo
    T#:339091
    Part#: TMS16426
    Ships on Oct 20, 2026
    Sale - Save 15% $ 628.99

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

    Starting at $ 534.49 USD
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    This product was last offered at the strikethrough price on
    06-15-2026

    Starting at $ 534.49 USD
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    This is a compete cooling system overhaul kit, which includes all of the common Z3 M52 cooling system failure parts bundled into a complete package. This cooling system package is for the 1997-1998 Z3 2.8 Roadster and 1998-2000 MZ3 M Roadster or M Coupe.

    The Z3 cooling system's 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 waterpump (with updated composite impeller and O-ring), thermostat (complete with O-ring), aluminum thermostat housing, profile gasket, radiator cap and new hoses (as pictured).

    Optional items (which can be added below):
    - Upgrade the waterpump to a Stewart/EMP High Performance pump
    - Original BMW antifreeze
    - Add a new coolant expansion tank (known for cracking)

    Buy as a package and save!!

    This cooling system overhaul kit fits the following BMWs:
    1997-1998 Z3 2.8 M52 Roadster
    1998-2000 Z3 M Roadster, M Coupe
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    Packaged by Turner - Corporate Logo
    T#:339093
    Part#: TMS16427
    Ships in 1 day
    $ 845.99

    This product was last offered at the strikethrough price on
    07-15-2026

    Starting at $ 749.55 USD
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    Starting at $ 749.55 USD
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    This is a compete cooling system overhaul kit, which includes all of the common Z3 cooling system failure parts bundled into a complete package.

    The Z3 cooling system's primary cooling components are prone to failure within 100k miles (or less in certain 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 radiator, OE BMW water pump (with composite impeller and O-ring), OEM thermostat and housing (complete with sensor and gasket), radiator cap, expansion tank, and new hoses (as pictured).

    Optional items (which can be added below):
    - Upgrade the waterpump to a Stewart/EMP High Performance pump
    - Original BMW antifreeze
    - Aluminum water pump pulley (stock plastic ones are known to crack)
    - Cooling fan clutch

    Buy as a package and save!!

    This cooling system overhaul kit fits the following BMWs:
    1999-2002 Z3 2.3 2.5i 2.8 3.0
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    Packaged by Turner - Corporate Logo
    T#:338650
    Part#: TMS16418
    Ships in 1 day
    Starting at $ 713.99 USD
    Starting at $ 713.99 USD
    This cooling package for the E30 M3 consists of all of the major components on the S14's cooling system. There are no major weak points to the E30's cooling system, unless you count skipped maintenance. The entire system is serviceable in individual components so you don't need to buy a complete package of parts. Many of the indivdual parts are on our site but we have setup this package to cover all or most of what you would need to perform a major overhaul. This overhaul package consists of an Genuine BMW radiator and then you build the package from there. Add hoses, sensors, water pumps, thermostats, gaskets, hose clamps, and more. We also sell the Original BMW antifreeze to finish off the job.

    Any problems with the cooling system are likely electrical. Sensors become corroded and fail over time which will send the incorrect signal to the corresponding unit, including the engine computer. Diagnosis of electrical type problems is easy and repair with the OEM Bosch or OE BMW sensors is not too expensive for a car like this. Electrical connections, particularly solder joints, can also become brittle and fail. These are not helped by the intense vibrations of the S14.

    Top Turner Tip for a healthy S14!
    E30 M3s always seem to have cooling problems at the most inconvenient time. If the temp gauge starts rising in the summer months first check and make sure your auxiliary cooling fan is working if it's not it's most likely the switch or the wiring going to the switch. Also remember that the E30 instrument conductor plate can make the gauge read whacky try tapping the gauge if it seems like it's acting up. When it's time to do a water pump (which weeps through a hole on the bottom before it goes completely) take a good look at the radiator too its not expensive and you have to remove it to install the pump anyway.

    Use the options below to build your package.

    This cooling package fits the following BMWs:
    1988-1991 E30 BMW M3
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    Water Pump And Thermostat Kit - E60 M5 E63 M6 E64 M6
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:554066
    Part#: 11517838201KT2
    Ships in 5 Business Days
    Sale - Save 31% $ 287.99

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

    $ 199.12 USD
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    This product was last offered at the strikethrough price on
    04-07-2026

    $ 199.12 USD
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    The water pumps in BMW's should be serviced near 80,000 miles and may become an 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
    • Geba water pump
    • Vaico coolant
    • Mounting hardware required for the water pump
    • O-rings for the thermostat housing

     

    This item fits the following BMWs:
    2005+ E60 BMW M5
    2005+ E63 BMW M6

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    Packaged by Turner - Corporate Logo
    T#:557320
    Part#: E9XM3PCKT
    Ships in 2 Business Days
    $ 2,336.08

    This product was last offered at the strikethrough price on
    08-24-2026

    $ 2,299.81 USD
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    $ 2,299.81 USD
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    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!
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    Packaged by Turner - Corporate Logo
    T#:557321
    Part#: E9XM3PCKT2
    Ships in 2 Business Days
    $ 2,322.15

    This product was last offered at the strikethrough price on
    08-24-2026

    $ 2,285.88 USD
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    $ 2,285.88 USD
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    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!
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    Water Pump & Thermostat Kit - BMW M42
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:30198008
    Part#: 11537511580KT5
    Ships on Sep 22, 2026
    Sale - Save 5% $ 118.99

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

    $ 113.55 USD
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    $ 118.99

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

    $ 113.55 USD
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    Regular maintenance is key to keeping your BMW running smoothly, and the water pump is a critical component that should be serviced every 60,000 miles. To ensure the overall efficiency of your cooling system, it's also recommended to replace the thermostat at the same time. Turner Motorsport has created a streamlined solution with their Water Pump & Thermostat Replacement Kit, making your cooling system upgrade simple and effective.

    Kit Includes:

    Meyle Water Pump with Metal Impeller (11510393338) VEMO Thermostat - 88°C (11537511580) Elring Thermostat Housing Flange Gasket (11531721172) Genuine BMW Coolant/Antifreeze (82141467704) Benefits:

    Enhanced Cooling Efficiency: Earlier opening thermostat improves temperature control under performance conditions. Reliable Components: Includes high-quality parts from Meyle and VEMO, known for their durability and reliability. Complete Solution: All necessary components for a comprehensive cooling system refresh in one convenient kit. Performance-Driven Design: Ideal for those looking to maintain and enhance the cooling capabilities of their S55 engine.

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    Thermostat & Water Pump Kit - E36 Z3 M44 1.9L
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:30430702
    Part#: 115103933384KT2
    Ships on Sep 22, 2026
    $ 196.99 USD
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    As a common failure point among all BMW models, the water pump should be serviced every 60,000 miles. While doing so, it's wise to change the thermostat to ensure proper functionality of your vehicle's cooling system. Thankfully, Turner Motorsport has combined these parts into one simple kit, making your cooling system refresh easier than ever. This Water Pump & Thermostat Replacement Kit Includes:

    Meyle Water Pump - Metal Impeller (11510393338) Hamburg-Technic Thermostat (11531743017) Genuine BMW Coolant/Antifreeze (82141467704) Genuine BMW Installation Hardware Looking to maintain your M44 cooling system while enhancing cooling capabilities? Choose this performance kit assembled by the enthusiasts at Turner Motorsport and keep your BMW running cool and efficiently!

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    Basic Cooling System Service Kit - E36 M42 1.8L
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:557204
    Part#: E36M42BCKT
    Ships on Sep 22, 2026
    Sale - Save 3% $ 211.99

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

    $ 206.66 USD
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    $ 211.99

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

    $ 206.66 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 - E34 525i M50 2.5L
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:557231
    Part#: E34525BCKT
    Ships in 10 Business Days
    Sale - Save 7% $ 248.99

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

    $ 231.24 USD
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    Sale - Save 7%
    $ 248.99

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

    $ 231.24 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

    Basic Cooling System Service Kit - E36 Z3 M44 1.9L
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:557215
    Part#: E36M44BCKT
    Ships on Sep 22, 2026
    Sale - Save 3% $ 252.99

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

    $ 246.54 USD
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    $ 252.99

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

    $ 246.54 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 - E83 M54
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:554544
    Part#: 17113400013KT3
    Ships in 1 day
    Sale - Save 2% $ 873.99

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

    $ 855.57 USD
    Sale - Save 2%
    $ 873.99

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

    $ 855.57 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 E83 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. 

     

     

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    Cooling System Overhaul Kit - E39 M5
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:554556
    Part#: 17111436062KT2
    Back Ordered
    $ 2,392.99

    This product was last offered at the strikethrough price on
    08-14-2026

    $ 2,322.99 USD
    $ 2,322.99 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 1999-2003 E39 M5 with the S62 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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    Packaged by Turner - Corporate Logo
    T#:557247
    Part#: E36BCKT2
    Ships on Oct 20, 2026
    Sale - Save 18% $ 274.99

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

    $ 225.41 USD
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    Sale - Save 18%
    $ 274.99

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

    $ 225.41 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


    Packaged by Turner - Corporate Logo
    T#:340365
    Part#: TMS16432
    Ships on Jan 13, 2027
    Starting at $ 857.54 USD
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    Starting at $ 857.54 USD
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    This packages covers the major components you would install along with a new water pump or thermostat. On the N54 cars (135i, 335i, 535i) the water pump and theremostat are mounted together. In fact, to get to the thermostat, BMW expects you to remove the water pump. This package covers the whole job. With the electric water pump now an integral part of the efficiency and performance of the engine, staying on top of its maintenance and replacement is the smart thing to do.

    Our water pump/thermostat overhaul includes:

    • OEM VDO electric water pump, p/n 11517588885 or 11517632426
    • OEM 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
    • Original BMW hose clamps for hose (x 2)
    • BUY AS A PACKAGE AND SAVE $$!

      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 automatic transmission oil. The good news is that the pump only works when, and only as much, as it needs to. The engine computer dictates how much fluid needs to be pumped through the system depending on the load. That means the system can actually stop the pump when warmer temperatures are needed. No longer is the pump spinning all the time from an engine-driven belt. The bad news is that it's now an electrical part, so a failure is usually immediate and with no warning. And if the electronics are at fault, there is no way to rebuild or repair it. Fortunately, the engine computer will force a shut down or reduce power if a problem occurs, preventing catastrophic engine damage.

      How to avoid a water pump failure in the future? Replacing the water pump as part of a regular interval schedule will ensure you always have a functioning pump in place. Since this technology is relatively new for BMW, therefore the lifecycle of the pump isn't yet known, we have been recommending replacement every 80-100k miles. This package of OE/OEM parts covers everything with Original BMW coolant offered to finish off the job. A proper bleeding procedure must be followed with the new electric pump.

      This water pump package fits the following BMWs with the N54 engine:
      2007-2010 E60 BMW 535i 535xi 535i xDrive
      2008-2010 E82 BMW 135i
      2011-2012 E82 BMW 1M Coupe
      2006-2010 E90 BMW 335i 335xi 335i xDrive - Sedan
      2007-2010 E92 BMW 335i 335is 335xi 335i xDrive - Coupe
      2007-2010 E93 BMW 335i - Convertible
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    OEM Water Pump And Thermostat Kit - N55 3.0L
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:557277
    Part#: N55WTKT3
    Ships on Jan 13, 2027
    $ 806.99 USD
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    $ 806.99 USD
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    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. This kit provides a single stop for water pump and thermostat replacement needs to save the search and get you back on the road.

    Kit includes:

    • OEM Wahler Thermostat
    • OEM VDO Electric Water Pump
    • Genuine BMW Antifreeze/Coolant
    • OEM VDO Mounting hardware required for both the thermostat and water pump
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    Packaged by Turner - Corporate Logo
    T#:557261
    Part#: N55WTKT
    Ships on Jan 13, 2027
    Sale - Save 10% $ 531.99

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

    $ 476.66 USD
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    Sale - Save 10%
    $ 531.99

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

    $ 476.66 USD
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    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. This kit provides a single stop for water pump and thermostat replacement needs to save the search and get you back on the road.

    Kit includes:

    • Genuine BMW Thermostat
    • OEM Pierburg Electric Water Pump
    • Genuine BMW Antifreeze/Coolant
    • OEM Mounting hardware required for both the thermostat and water pump
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    Packaged by Turner - Corporate Logo
    T#:557276
    Part#: N55WTKT2
    Ships on Jan 13, 2027
    Sale - Save 4% $ 865.99

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

    $ 829.18 USD
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    Sale - Save 4%
    $ 865.99

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

    $ 829.18 USD
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    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. This kit provides a single stop for water pump and thermostat replacement needs to save the search and get you back on the road.

    Kit includes:

    • Genuine BMW Thermostat
    • OEM VDO Electric Water Pump
    • Genuine BMW Auxiliary Water Pump
    • Genuine BMW Antifreeze/Coolant
    • OEM Mounting hardware required for both the thermostat and water pump
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    E60 535i Auto Cooling Overhaul Package
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:338764
    Part#: TMS216185
    In Stock
    Starting at $ 585.99 USD
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    Starting at $ 585.99 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 an automatic 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
  • 17127560971, return hose
  • 17127563852, heat exchanger hose
  • 17127560974, transmission cooler hose
    BUY AS A PACKAGE AND SAVE $$!

    This water pump package fits the following BMWs:
    2007-2010 E60 BMW 535i 535xi 535i xDrive automatic transmission
    Click on the options for your kit below and then click "update price" for your kit total.
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    Packaged by Turner - Corporate Logo
    T#:30197967
    Part#: 11517846361KT4
    Ships on Sep 18, 2026
    $ 479.99

    This product was last offered at the strikethrough price on
    04-28-2026

    $ 429.99 USD
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    $ 429.99 USD
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    The water pump is a known weak point across all BMW models, requiring servicing every 60,000 miles. Along with the water pump, it’s wise to replace the thermostat to ensure your cooling system operates at peak efficiency.

    This kit features a 90°C (194°F) thermostat from Hamburg Technic, which opens approximately 15°C earlier than the standard factory thermostat. This lower temperature is particularly advantageous for performance-focused applications.

    What's Included:

    Genuine BMW Mechanical Water Pump Assembly (11517846361) Hamburg Technic Performance Thermostat - 90°C/194°F (11537586885) Genuine BMW Coolant/Antifreeze - Diluted, 1 Gallon (82141467704) Benefits of a Lower Thermostat Temperature:

    Enhanced Engine Cooling: Opens sooner to reduce engine temperature more effectively. Improved Performance: Keeps engine components cooler, allowing for better performance in high-stress conditions. Extended Engine Life: Reduces thermal stress on engine parts, promoting longevity. Prevents Overheating: Helps to avoid overheating in demanding driving scenarios. Optimized Fuel Efficiency: Maintains ideal engine temperature for efficient fuel combustion. Elevate your BMW's cooling system and performance with this expertly curated kit from Turner Motorsport.

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    Heater Hard Line replacement Kit
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:15777306
    Part#: 11531705210-KT
    Ships on Nov 12, 2026
    $ 259.99

    This product was last offered at the strikethrough price on
    04-28-2026

    $ 251.99 USD
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    $ 251.99 USD
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    Includes every thing needed to replace heater coolant hard lines, includes gaskets, hoses, and a URO aluminum return line!
    Packaged by Turner - Corporate Logo
    T#:554073
    Part#: 11537509227KT3
    Ships on Feb 24, 2027
    $ 103.99 USD
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    $ 103.99 USD
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    When it comes time to replace your thermostat, be sure you have everything you need. This kit includes everything you need to replace your thermostat, including the thermostat.

    Kit includes:

    • Mahle-Behr thermostat with gasket
    • Thermostat mounting hardware
    • 1 liter of coolant

    Applications:
    1999-2003 E39 528i, 525i, 530i sedan, touring wagon (M52TU engine, M54 engine)
    1999-2005 E46 323, 328, 325, 330 sedan, coupe, cabrio, touring wagon (M52TU engine, M54 engine)
    2004-2005 E60 525i, 530i sedan, touring wagon (M54 engine)
    2001-2006 E53 X5 3.0 (M54 engine)
    2004-2006 E83 X3 2.5i X3 3.0i (M54 engine)
    1999-2002 Z3 2.3. Z3 2.5i, 2.8 Z3 3.0i (M54 engine)
    2003-2005 Z4 2.5i, Z4 3.0 (M54 engine)

     

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    Thermostat Replacement Kit - E36
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:554081
    Part#: 11537511580KT3
    Ships on Feb 24, 2027
    Sale - Save 14% $ 62.99

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

    $ 54.14 USD
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    Sale - Save 14%
    $ 62.99

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

    $ 54.14 USD
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    When it comes time to replace your thermostat, be sure you have everything you need. This kit includes everything you need to replace your thermostat, including the thermostat.

    Kit includes:

    • Thermostat with gasket
    • Thermostat mounting hardware
    • 1 liter of coolant

    This waterpump fits the following BMWs: 
    1992-1999 E36 3 series - 323is, 323ic, 325i, 325is, 325ic, 328i, 328ic, M3 3.0 (S50/US), M3 3.2 (S52) 

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    Cooling System Refresh Kit - Level 1
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:15744012
    Part#: 32411712735-KT
    Ships in 4 Business Days
    Sale - Save 7% $ 664.99

    This product was last offered at the strikethrough price on
    07-16-2026

    $ 619.41 USD
    Free Shipping on orders $49 and up
    Sale - Save 7%
    $ 664.99

    This product was last offered at the strikethrough price on
    07-16-2026

    $ 619.41 USD
    Free Shipping on orders $49 and up
    Stop the problems before they arise. If you vehicle has 60,000 miles or more, replace all of these components to ensure that your vehicle stays healthy. To keep everything in top order, continue to replace these components at 60,000 mile intervals. Water pump failure, cracked plastic housings, and expansion tank leaks will not be a concern once all these problem parts are replaced. Included in this kit are the following parts. Rein Water Pump with metal impeller FAE Fan Switch Vaico Q+ thermostat - made in Germany! New O-ring Sealing Gaskets OEM Expansion Tank & Cap 1 Gallon Coolant Rein Upper & Lower Radiator Hoses
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    Cooling System overhaul Kit - E46 M3
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:554122
    Part#: 17127510952KT10
    Back Ordered
    $ 1,883.99

    This product was last offered at the strikethrough price on
    07-16-2026

    $ 1,809.99 USD
    $ 1,809.99 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 E46 M3 with the S54 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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    Packaged by Turner - Corporate Logo
    T#:338740
    Part#: TMS338740
    Ships on Oct 21, 2026
    Sale - Save 5% $ 1,009.99

    This product was last offered at the strikethrough price on
    07-16-2026

    Starting at $ 961.81 USD
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    $ 1,009.99

    This product was last offered at the strikethrough price on
    07-16-2026

    Starting at $ 961.81 USD
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    As the E46 M3 gets on in years and mileage, the cooling system will be one of the areas that needs the most attention. We have packaged all of the major cooling components into one overhaul kit:

    • radiator
    • water pump
    • thermostat
    • radiator hoses and clamps
    • gaskets and o-rings

    We have found that the E46 M3 can develop inconvenient cooling issues, even on daily driven street cars. While the infamous radiator and water pump failures of the E36 are a thing of the past, the E46 M3 still has its own complications. The best approach to avoid bigger problems is preventative maintenance. We recommend replacing the water pump before 80,000 miles and the radiator before 100,000 miles. By addressing these problem areas before a failure, you will save yourself a larger repair bill in the future.

    In addition to the standard cooling package items above, there are several other cooling-related components that may make sense to do at the same time:

    • Original BMW coolant
    • fan clutch
    • main serpentine belt and A/C belt
    • Turner Power Pulley Kit (because now is the perfect time!)

    This cooling overhaul package fits:
    2001-2006 E46 BMW M3
     

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    Basic Cooling System Service Kit - E46 BMW M3
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:557246
    Part#: E46M3BCKT
    Ships in 4 Business Days
    Sale - Save 7% $ 664.99

    This product was last offered at the strikethrough price on
    07-16-2026

    $ 619.41 USD
    Free Shipping
    Sale - Save 7%
    $ 664.99

    This product was last offered at the strikethrough price on
    07-16-2026

    $ 619.41 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.

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    High Performance Cooling System Upgrade - E46 M3
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:557315
    Part#: E46MPCKT
    Back Ordered
    Sale - Save 2% $ 2,201.99

    This product was last offered at the strikethrough price on
    08-24-2026

    $ 2,166.46 USD
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    Sale - Save 2%
    $ 2,201.99

    This product was last offered at the strikethrough price on
    08-24-2026

    $ 2,166.46 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, and a Genuine BMW Motorsport 55*C thermostat, for lower temperature operation and increased cooling of the engine. 

    Additional items included in this kit:

    • ECS Tuning Silicone Replacement Coolant Hoses - For increased reliability over stock rubber hoses
    • ECS Tuning Heavy Duty Aluminum Bleeder Screw
    • 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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