BMW Cooling System Parts & Accessories for BMW X Series F16 (2015+)

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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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Water Pump And Thermostat Kit - BMW N55 F Chassis
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:39093005
Part#: 11518635090KT6
In Stock
$ 470.99

This product was last offered at the strikethrough price on
06-03-2026

$ 449.99 USD
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$ 449.99 USD
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Water Pump And Thermostat Kit - BMW N55 F Chassis

Ensure optimal engine cooling and performance with this high-quality Water Pump And Thermostat Kit - BMW N55 F Chassis. In the mid-2000s, BMW introduced electronically controlled water pumps and thermostats for better temperature regulation and efficiency. However, these components tend to have a shorter lifespan compared to traditional mechanical designs, often failing before BMW’s recommended 80,000-mile service interval.

This complete kit from Turner Motorsport includes premium-quality components that match OEM specifications, providing reliable and efficient cooling system performance. Maintaining a properly functioning cooling system helps prevent overheating, enhances efficiency, and extends engine life.

Signs Your Water Pump and Thermostat May Need Replacement:

  • Engine overheating or failing to reach operating temperature
  • Water pump running intermittently or erratically
  • Cooling fans operating at maximum output
  • Engine fault codes, including 20A804

Upgrade your BMW N55 F Chassis cooling system with this all-in-one kit for worry-free performance and longevity.

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BMW N54 N55 S55 Mosselman Thermostat Installation Kit
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:4799665
Part#: THERMINSTALLKT
In Stock
Sale - Save 6% $ 22.99

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

$ 21.64 USD
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$ 22.99

This product was last offered at the strikethrough price on
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$ 21.64 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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Packaged by Turner - Corporate Logo
T#:554075
Part#: 11537601158KT2
In Stock
Sale - Save 24% $ 106.99

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

$ 81.42 USD
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Sale - Save 24%
$ 106.99

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

$ 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

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

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

$ 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

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 14, 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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$ 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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Packaged by Turner - Corporate Logo
T#:55353595
Part#: OTN54.T85KT3
In Stock
New Item
$ 390.23 USD
Free Shipping on orders $49 and up
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 Assembly
10X Entries Into Our F80 M3 Sweepstakes
Bavarian Autosport - Corporate Logo
T#:15511823
Part#: 11537598865
In Stock
Sale - Save 10% $ 78.99

This product was last offered at the strikethrough price on
08-11-2026

$ 71.09 USD
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Sale - Save 10%
$ 78.99

This product was last offered at the strikethrough price on
08-11-2026

$ 71.09 USD
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Replace your thermostat housing at any signs of leaks or premature failure. Includes housing. Does not include a housing gasket.

BMW N55 3.0L Water Pump
10X Entries Into Our F80 M3 Sweepstakes
Bavarian Autosport - Corporate Logo
T#:26404797
Part#: 11518635090
In Stock
$ 333.99 USD
Free Shipping on orders $49 and up

BMW N55 3.0L Water Pump is an essential component for maintaining the performance and reliability of your BMW. Manufactured by Turner Motorsport, this high-quality water pump is designed to ensure optimal cooling efficiency for the N55 3.0L engine.

  • Reliable Performance: Designed to handle the high demands of the BMW N55 engine, ensuring consistent cooling performance.
  • High-Quality Construction: Made with durable materials to resist wear and provide long-lasting service.
  • Prevents Overheating: Helps prevent engine overheating by effectively circulating coolant throughout the engine.
  • Reduces Coolant Leaks: Engineered to minimize the risk of leaks, maintaining proper coolant levels and engine temperature.
  • Quiet Operation: Operates smoothly and quietly, avoiding the whining noises often associated with failing pumps.
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Rein Water Hose With Gasket - Water Pump To Engine Inlet
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:17804808
Part#: 11537584630R
Back Ordered
$ 40.99 USD
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Rein OE quality water hoses are designed to be direct replacements for OE hoses and assemblies. This includes the hose and clamps.
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
Sale - Save 5% $ 26.99

This product was last offered at the strikethrough price on
08-31-2026

$ 25.64 USD
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$ 26.99

This product was last offered at the strikethrough price on
08-31-2026

$ 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
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:554681
Part#: 17127575427
In Stock at Vendor
Sale - Save 5% $ 51.99

This product was last offered at the strikethrough price on
08-31-2026

$ 49.39 USD
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Sale - Save 5%
$ 51.99

This product was last offered at the strikethrough price on
08-31-2026

$ 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
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:592002
Part#: 17127536235
Ships in 2 Business Days
Sale - Save 5% $ 30.99

This product was last offered at the strikethrough price on
08-31-2026

$ 29.44 USD
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$ 30.99

This product was last offered at the strikethrough price on
08-31-2026

$ 29.44 USD
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Connects to the bottom of the expansion tank
Radiator Hose - Metal Flange
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:4826911
Part#: 17127619702
Ships in 2 Business Days
Sale - Save 5% $ 36.99

This product was last offered at the strikethrough price on
08-31-2026

$ 35.14 USD
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Sale - Save 5%
$ 36.99

This product was last offered at the strikethrough price on
08-31-2026

$ 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 - Return Hose
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:17771593
Part#: 11537615492
Ships in 2 Business Days
Sale - Save 5% $ 45.99

This product was last offered at the strikethrough price on
08-31-2026

$ 43.69 USD
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Sale - Save 5%
$ 45.99

This product was last offered at the strikethrough price on
08-31-2026

$ 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
Sale - Save 5% $ 42.99

This product was last offered at the strikethrough price on
08-31-2026

$ 40.84 USD
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Sale - Save 5%
$ 42.99

This product was last offered at the strikethrough price on
08-31-2026

$ 40.84 USD
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Rein Turbocharger Coolant Line CHU0902
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:34147744
Part#: 11537577012
Ships in 2 Business Days
Sale - Save 5% $ 69.99

This product was last offered at the strikethrough price on
08-31-2026

$ 66.49 USD
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Sale - Save 5%
$ 69.99

This product was last offered at the strikethrough price on
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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
Sale - Save 5% $ 71.99

This product was last offered at the strikethrough price on
08-31-2026

$ 68.39 USD
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$ 71.99

This product was last offered at the strikethrough price on
08-31-2026

$ 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
Sale - Save 6% $ 67.99

This product was last offered at the strikethrough price on
08-31-2026

$ 64.19 USD
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Sale - Save 6%
$ 67.99

This product was last offered at the strikethrough price on
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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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Rein - Corporate Logo
T#:17738371
Part#: 17127576358
In Stock at Vendor
Sale - Save 5% $ 72.99

This product was last offered at the strikethrough price on
08-31-2026

$ 69.34 USD
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Sale - Save 5%
$ 72.99

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
08-31-2026

$ 75.99 USD
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$ 79.99

This product was last offered at the strikethrough price on
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$ 75.99 USD
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
08-31-2026

$ 56.99 USD
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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.