BMW Cooling System Parts & Accessories for BMW X Series F15 (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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Packaged by Turner - Corporate Logo
T#:4799665
Part#: THERMINSTALLKT
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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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Packaged by Turner - Corporate Logo
T#:554075
Part#: 11537601158KT2
In Stock
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$ 81.42 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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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 4 Business Days
Sale - Save 8% $ 342.99

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05-03-2026

$ 316.08 USD
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$ 342.99

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$ 316.08 USD
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Packaged by Turner - Corporate Logo
T#:557261
Part#: N55WTKT
Ships on Jan 14, 2027
Sale - Save 10% $ 531.99

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$ 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 14, 2027
Sale - Save 4% $ 865.99

This product was last offered at the strikethrough price on
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$ 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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Packaged by Turner - Corporate Logo
T#:55353595
Part#: OTN54.T85KT3
In Stock
New Item
$ 390.23 USD
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High oil temperatures are the ultimate enemy of your engine's longevity and performance. If you want to keep pushing your BMW to the limit you need to manage the heat.

Thermostat & Water Pump Replacement Kit - BMW N57 3.0L
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:30397455
Part#: 11518516205KT2
Ships on Sep 18, 2026
Sale - Save 5% $ 299.99

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

$ 284.24 USD
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Regular maintenance of your BMW's cooling system is crucial, with the water pump being a known weak point across all models. To ensure optimal performance, it's recommended to service the water pump every 60,000 miles and replace the thermostat simultaneously. Turner Motorsport makes this process seamless with our comprehensive Water Pump & Thermostat Replacement Kit.

Why Choose Our Kit?

Convenience: All essential parts are bundled in one kit. Quality: Components from trusted brands like MAHLE and Graf. Reliability: High-quality parts ensure a perfect fit and long-lasting performance. Value: Save time and money with our complete kit. Kit Contents:

MAHLE Thermostat (Part #: 11518512234) Graf Water Pump Assembly (Part #: 11518516205) Genuine BMW Thermostat Gasket (Part #: 11518516207) Genuine BMW Bolt (Part #: 11518512449) Genuine BMW Bolt (M6x30) (Part #: 07119906123) Genuine BMW Coolant/Antifreeze (Concentrate, 1 Gallon) (Part #: 82141467704) Ready for a Cooling System Overhaul?

Opt for Turner Motorsport's Water Pump & Thermostat Replacement Kit for a hassle-free, effective repair that keeps your BMW running cool and smooth.

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OEM Rein Vent Hose - N63 4.4L
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:554680
Part#: 17127576363
Ships in 2 Business Days
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$ 25.64 USD
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Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure.

Fits the following engines:
N63 4.4L


OEM Rein Lower Coolant Hose - N63 4.4L
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Rein - Corporate Logo
T#:554681
Part#: 17127575427
In Stock at Vendor
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$ 49.39 USD
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Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure.

Fits the following engines:
N63 4.4L


Rein Coolant Line - E70
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Rein - Corporate Logo
T#:592002
Part#: 17127536235
Ships in 2 Business Days
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$ 29.44 USD
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Connects to the bottom of the expansion tank
Rein - Return Hose
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Rein - Corporate Logo
T#:17771593
Part#: 11537615492
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$ 43.69 USD
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Replace leaking or faulty hoses with Rein premium hoses to restore your vehicle to safe and optimal performance levels.
Upper Radiator Hose
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:599684
Part#: 17127586774
Ships in 2 Business Days
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$ 40.84 USD
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Radiator Hose - Metal Flange
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:4826911
Part#: 17127619702
Ships in 2 Business Days
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$ 35.14 USD
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Cylinder Head Coolant Hose to keep your motor healthy for many miles ahead. Replace damaged or worn coolant hose with upgraded metal flange from Rein.
Rein Turbocharger Coolant Line CHU0902
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:34147744
Part#: 11537577012
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$ 66.49 USD
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Rein Turbocharger Coolant Line CHU0902 is a high-quality replacement part designed to ensure optimal cooling for BMW turbocharged engines. This coolant line, available from Turner Motorsport, is engineered to efficiently regulate coolant flow to prevent overheating of the turbocharger, protecting it from damage and extending its lifespan. The Rein Turbocharger Coolant Line CHU0902 offers a perfect OEM fit for seamless installation, making it an ideal choice for both professional mechanics and BMW enthusiasts.

Constructed with durable, heat-resistant materials, this coolant line ensures long-lasting performance and reliability. It’s a vital component for maintaining engine efficiency and maximizing the performance of your BMW’s turbo system.

Key Features:

  • Designed for BMW turbocharged engines to prevent turbo overheating
  • Perfect OEM fit for easy, hassle-free installation
  • Efficient coolant regulation improves engine and turbocharger longevity
  • Made from durable, heat-resistant materials for long-term reliability
  • Available from Turner Motorsport, a trusted source for BMW parts and performance upgrades

For BMW owners looking to enhance engine performance and protect the turbo system, the Rein Turbocharger Coolant Line CHU0902 is a must-have upgrade.

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Intercooler Expansion Tank
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:584477
Part#: 17137647281
In Stock at Vendor
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This product was last offered at the strikethrough price on
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$ 68.39 USD
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OEM Rein Water Pump Coolant Hose - BMW F15 F16 N55 3.0L
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:45757475
Part#: 11537649394
In Stock at Vendor
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$ 64.19 USD
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This hose connects the primary water pump to the thermostat housing. Coolant hoses can become brittle over time, leading to cracks and coolant leaks. If your coolant hose is leaking, replace it early to prevent coolant loss and eventual overheating.
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BMW Turbo Cooling Line
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:46478582
Part#: CHT0690
Back Ordered
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This product was last offered at the strikethrough price on
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$ 52.98 USD
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Your turbo is constantly working under extreme heat and pressure, generating serious boost every time you get on the gas. The turbo cooling lines are responsible for circulating coolant through the turbocharger, keeping temperatures in check and safeguarding internal components from excessive heat. With time, these lines can corrode, crack, or clog—compromising coolant flow and system efficiency. If left unchecked, a failing line can lead to overheating, loss of performance, or even costly turbo damage. Why replacing them matters: Protect your turbo – Ensures proper cooling to prevent heat soak and extend turbo life. Stop leaks early – Prevent small coolant drips from turning into bigger, more expensive problems. Keep performance consistent – Reliable cooling means steady boost and dependable operation. Don’t let a tired cooling line put your turbo at risk—replace it and keep your forced-induction system performing at its best.
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Rein - Corporate Logo
T#:17738371
Part#: 17127576358
In Stock at Vendor
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This product was last offered at the strikethrough price on
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$ 69.34 USD
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Rein Coolant Hose CHK0722 is a high-performance replacement hose that connects the lower radiator to the water pump.

Rein - Corporate Logo
T#:55965849
Part#: 11537598865
Ships in 4 Business Days
New Item
Sale - Save 5% $ 79.99

This product was last offered at the strikethrough price on
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$ 75.99 USD
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A malfunctioning or lazy thermostat can lead to poor fuel trim efficiency, sluggish performance, and destructive overheating. This Rein thermostat assembly is engineered as a robust direct replacement for your worn factory unit, ensuring proper coolant regulation through the radiator under heavy loads.
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Return Hose
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:17704695
Part#: 11537637059
Ships in 4 Business Days
Sale - Save 5% $ 59.99

This product was last offered at the strikethrough price on
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$ 56.99 USD
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OE quality return hose for the cooling system.