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BMW Cooling System Parts & Accessories for BMW X Series E71 (2008-2014)

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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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BMW N54 N55 S55 Mosselman Thermostat Installation Kit

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T#:4799665

Part#: THERMINSTALLKT

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$ 22.99 USD

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$ 22.99 USD

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BMW N54 N55 S55 Mosselman Thermostat Installation Kit is designed to ensure a seamless installation of the Mosselman thermostat on BMW engines. This comprehensive kit from Turner Motorsport includes all necessary gaskets and components, guaranteeing a reliable and precise installation for optimal engine performance.

Complete Kit: Includes all essential gaskets and components required for a hassle-free thermostat installation.
Optimal Performance: Ensures proper installation of the Mosselman thermostat, leading to improved engine cooling efficiency and performance.
High-Quality Components: Gaskets and parts are manufactured to meet high standards of durability and reliability.
Precision Fit: Engineered to match OEM specifications, providing a perfect fit and reliable performance.
Ease of Installation: All necessary parts are included, simplifying the installation process and reducing the need for additional purchases.

Upgrade your BMW's cooling system with the Mosselman Thermostat Installation Kit from Turner Motorsport, ensuring a top-quality, reliable setup for your engine.

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Ultimate Water Pump And Thermostat Kit - N54

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T#:5376299

Part#: 11517632426TMSKT

In Stock

Sale - Save 15% $ 987.99

This product was last offered at the strikethrough price on
03-31-2026

$ 838.76 USD

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Sale - Save 15%

$ 987.99

This product was last offered at the strikethrough price on
03-31-2026

$ 838.76 USD

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Add strength to your cooling system and replace your water pump The secret of any reliable performance car is a rock-solid cooling system. Unfortunately, the N54's stock cooling system has several shortcomings that get in the way of reliable, repeatable, dependable performance. Turner Motorsport has spent years behind the wheel of modified N54-powered BMWs, and we've figured out what it takes to keep your N54 cool and happy. Using a combination of in-house designed parts and carefully-selected aftermarket components, we've put together an all-inclusive package that will allow you to replace your water pump and beef up your cooling system at the same time. Here's what's included: New water pump with replacement screws New thermostat Billet thermostat hose adapter (a great replacement for the stock, crack-prone plastic part!) Silicone coolant outlet hose Aluminized silicone water pump hose (aluminized for heat resistance to stay cool!) Heavy Duty aluminum coolant bleed screw (replace the strip-prone plastic screw!) New hose clamps 1 gallon of Genuine BMW coolant (just add distilled water at your desired ratio) Red Line Water Wetter (trust us, this stuff works - we've been running it for years!)Add strength to your cooling system and replace your water pump The secret of any reliable performance car is a rock-solid cooling system. Unfortunately, the N54's stock cooling system has several shortcomings that get in the way of reliable, repeatable, dependable performance. Turner Motorsport has spent years behind the wheel of modified N54-powered BMWs, and we've figured out what it takes to keep your N54 cool and happy. Using a combination of in-house designed parts and carefully-selected aftermarket components, we've put together an all-inclusive package that will allow you to replace your water pump and beef up your cooling system at the same time. Here's what's included: New water pump with replacement screws New thermostat Billet thermostat hose adapter (a great replacement for the stock, crack-prone plastic part!) Silicone coolant outlet hose Aluminized silicone water pump hose (aluminized for heat resistance to stay cool!) Heavy Duty aluminum coolant bleed screw (replace the strip-prone plastic screw!) New hose clamps 1 gallon of Genuine BMW coolant (just add distilled water at your desired ratio) Red Line Water Wetter (trust us, this stuff works - we've been running it for years!)

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Thermostat Replacement Kit - E82 E9X E84 E70 E71 With N55 Engines ...

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

T#:554075

Part#: 11537601158KT2

Ships on Jul 7, 2026

Sale - Save 25% $ 106.99

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

$ 79.77 USD

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$ 106.99

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

$ 79.77 USD

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If your vehicle is experiencing cooling issues, chances are the thermostat is the cause. Common symptoms include prolonged warm-up at highway speeds from the thermostat being stuck open, or consistent overheating issues from the thermostat being stuck in the closed position. Either condition can result in poor performance, and potential damage to vital components in your vehicle.

Kit includes

Wahler Thermostat
1 liter of Coolant

This item fits the following BMWs:
2008-2013  E82 BMW  135i 135is 1M Coupe
2013+  E84 BMW  X1 xDrive35i
2011  E90 BMW  335i 335xi 335i xDrive - Sedan
2011-2013  E92 BMW  335i 335xi 335i xDrive - Coupe
2011-2013  E93 BMW  335i Convertible
2011-2013  E70 BMW  X5 xDrive35i
2011-2013  E71 BMW  X6 xDrive35i

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Performance Water Pump And Thermostat Kit

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T#:15710799

Part#: 11517632426-KT

In Stock

Sale - Save 20% $ 514.99

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

$ 411.95 USD

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Sale - Save 20%

$ 514.99

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

$ 411.95 USD

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The stock thermostat is designed to open at 97C. This leaves your engine running fairly hot, and running for quite awhile before your thermostat will begin operation. With the Mishimoto Racing thermostat, the activation temperature becomes 74C. That's 23C cooler, meaning you can rest easy knowing your engine will stay cooler to help avoid all the problems that can be associated with an engine running hot. 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. Mishimoto Racing thermostat Bavarian Autosport water pump Genuine BMW coolant Mounting hardware required for both the thermostat and water pump

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Thermostat Replacement kit - 90C

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T#:15744051

Part#: 82142209769KT

In Stock

Sale - Save 5% $ 146.99

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

$ 139.24 USD

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Sale - Save 5%

$ 146.99

This product was last offered at the strikethrough price on
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$ 139.24 USD

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Pierburg Full Aluminum Water Pump With Hardware

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T#:6091465

Part#: 11515A05704APKT

In Stock at Vendor

Sale - Save 17% $ 620.99

This product was last offered at the strikethrough price on
04-01-2026

$ 516.43 USD

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Sale - Save 17%

$ 620.99

This product was last offered at the strikethrough price on
04-01-2026

$ 516.43 USD

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If your water pump is starting to fail, you may notice coolant leaks, or even hear a whining noise coming from under the hood. If you think your water pump is starting to fail, replace it as soon as you can. The main downside to an electric water pump is you may also notice nothing - nothing but overheating! Keep your eyes peeled for warning signs it may be time to replace your water pump. N54 and N55 engines are prone to water pump failure - replace every 60,000 miles. Comes with electric water pump and installation hardware. Aluminum mounting bolts are one time use. Replace every time the water pump is removed.

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Water Pump And Thermostat Kit - E70 E71 F01 F02 F06 F07 F10 F12 F13 ...

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T#:554065

Part#: 11517548263KT3

Ships in 1-2 days

Sale - Save 36% $ 336.99

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

$ 215.85 USD

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Sale - Save 36%

$ 336.99

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

$ 215.85 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:

Thermostat
Water pump
Coolant

This item fits the following BMW Engines:
N63,N63N,S63,N62N

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BMW Water Pump And Thermostat Kit - N54

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

T#:378340

Part#: 11517632426KT3

In Stock

$ 743.03

This product was last offered at the strikethrough price on
03-31-2026

$ 665.86 USD

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$ 665.86 USD

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The water pumps in BMW N54 models are known for failure near 80,000 miles. This is a very common issue that often times leaves the owner stranded. This kit provides a single stop for the water pump and thermostat replacement to save the search and get you back on the road.

Included in this kit:

Thermostat
Water pump
Genuine BMW coolant
Mounting hardware required for both the thermostat and water pump

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Turbo Coolant Line Kit - F70, E71, F15, F16

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T#:41661213

Part#: 11537577014TKT

Ships in 1-2 days

Sale - Save 10% $ 342.99

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

$ 307.94 USD

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Sale - Save 10%

$ 342.99

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

$ 307.94 USD

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OEM Water Pump And Thermostat Kit - N55 3.0L

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T#:557277

Part#: N55WTKT3

Ships on Jul 7, 2026

$ 804.99 USD

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$ 804.99 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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