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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

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T#:39093005

Part#: 11518635090KT6

In Stock

Sale - Save 29% $ 470.99

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

$ 336.59 USD

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Sale - Save 29%

$ 470.99

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

$ 336.59 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

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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

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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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Thermostat Installation Kit with Thermostat - N54, N55, S55

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T#:55353595

Part#: OTN54.T85KT3

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$ 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.

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

$ 308.78 USD

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Sale - Save 10%

$ 342.99

This product was last offered at the strikethrough price on
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$ 308.78 USD

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Vent Hose Assembly

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T#:18468306

Part#: 17127576363

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$ 29.99 USD

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$ 29.99 USD

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Aluminum connector vs OEM plastic The connector cracks/leaks over time causing coolant to leak and/or overheating problems Molded to OE coolant hose shape for superb fitment Engine heat and ozone resistant Durable ECD (Electro Chemical Degradation)-resistant EPDM material helps prevent electrolysis from breaking down the rubber from the inside-out Temperature rating: -40º F to 275º F (-40º C to 135º C)

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Genuine MINI Engine Coolant Expansion Tank Cap - 17135A1BD89 ...

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T#:28337931

Part#: 17135A1BD89

Ships in 1-2 days

9% off MSRP $ 34.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 31.99 USD

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9% off MSRP

$ 34.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 31.99 USD

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Rein Vent Hose - 17127576363 - F07, F10 G30 5 Series, F06 F12 F13 6 S...

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T#:554680

Part#: 17127576363

Ships in 2 Business Days

$ 26.99 USD

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$ 26.99 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 N63 Coolant Hose - 17127575427 - F07, F10 G30 5 Series, F06 F12 ...

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T#:554681

Part#: 17127575427

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$ 52.79 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

Engine Block Cover - Rear

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T#:36235515

Part#: 11142446298

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$ 464.99 USD

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Details: Fitment guaranteed Replacement for cracked, or damaged engine block cover. Precisely manufactured to OE dimensions for exact fit and easy installation Durable high-quality materials are corrosion-resistant and withstand oil vapor and intense engine heat

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Rein Coolant Line - 17127536235 - E70, F15, E71, F16

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T#:592002

Part#: 17127536235

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$ 30.99 USD

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$ 30.99 USD

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Connects to the bottom of the expansion tank

Rein N54 N55 Upper Radiator Hose - 17127586774 - E70, F15, E71, F16 ...

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T#:599684

Part#: 17127586774

In Stock

$ 42.99 USD

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$ 42.99 USD

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Rein N63 Radiator Hose - Metal Flange - 17127619702 - F07, F10 5 Seri...

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T#:4826911

Part#: 17127619702

Ships in 2 Business Days

$ 36.99 USD

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$ 36.99 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 Water Hose With Gasket - Water Pump To Engine Inlet

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T#:17804808

Part#: 11537584630R

Ships in 2 Business Days

$ 40.99 USD

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$ 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.

URO Intercooler Expansion Tank - BMW N63 N74

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T#:593075

Part#: 17137647281

Ships in 2 Business Days

$ 59.99 USD

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$ 59.99 USD

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The coolant expansion tank in your vehicle gives additional fluid a place to go after expansion and contraction from temperature change. Because it is subjected to such drastic changes on a regular basis, it can often crack or break.

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Rein Return Hose - 11537615492 - F07, F10 5 Series, F06 F12 F13 6 Ser...

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T#:17771593

Part#: 11537615492

Ships in 2 Business Days

$ 45.99

This product was last offered at the strikethrough price on
10-22-2026

$ 45.69 USD

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$ 45.69 USD

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Replace leaking or faulty hoses with Rein premium hoses to restore your vehicle to safe and optimal performance levels.

Rein N63 Turbocharger Coolant Line - 11537577012 - E70, F15, E71, F16...

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T#:34147744

Part#: 11537577012

Ships in 2 Business Days

$ 69.99 USD

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$ 69.99 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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URO Thermostat Gasket - BMW N62 N63 N73 N74

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T#:592908

Part#: 11531440192

Ships in 2 Business Days

$ 0.97 USD

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$ 0.97 USD

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Seals the thermostat to the water pump

URO Thermostat Assembly - BMW E53 E6X E70 F10 F12 F13 F8X

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T#:50031902

Part#: 11537586885

In Stock

$ 74.99

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

$ 59.99 USD

Limited Qty Sale

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$ 74.99

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

$ 59.99 USD

Limited Qty Sale

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Provides optimal engine cooling performance.

Burgaflex Coolant Outlet Hose - 11537541992 - E9x, F3x, F8x, E8x, F22...

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T#:57725187

Part#: 11537541992

In Stock

$ 26.99 USD

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$ 26.99 USD

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The Burgaflex Coolant Outlet Hose delivers track-ready reliability for high-demand driving conditions.

Rein N55 Water Pump Coolant Hose - 11537649394 - F15 X5 sDrive35i X5 ...

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T#:45757475

Part#: 11537649394

In Stock at Vendor

$ 67.99 USD

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$ 67.99 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 N63 Lower Radiator Coolant Hose - 17127576358 - E70, F15, E71, F...

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T#:17738371

Part#: 17127576358

In Stock at Vendor

$ 72.99

This product was last offered at the strikethrough price on
10-22-2026

$ 64.99 USD

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$ 64.99 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 N55 Thermostat Assembly - 11537598865 - F3x, F22, F23, F87, F15,...

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T#:55965849

Part#: 11537598865

Ships in 4 Business Days

$ 79.99 USD

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$ 79.99 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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Auxillary Water Pump - BMW N63 S63

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T#:58818960

Part#: 11515A36581

Ships in 4 Business Days

$ 93.99 USD

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Pumps coolant to the turbo

Engine Coolant Expansion Tank Cap

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T#:59038367

Part#: 17135A1BD89

Ships in 4 Business Days

$ 9.99 USD

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$ 9.99 USD

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Coolant Hose

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T#:30828069

Part#: 17127619702

Back Ordered

$ 50.99 USD

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$ 50.99 USD

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Your cooling system is crucial for maintaining your engine's health over the long haul. Upgrade to Uro's metal flange to replace damaged or worn coolant hoses and ensure lasting performance.

Rein Return Hose - 11537637059 - F15 X5 xDrive50i, F16 X6 xDrive50i ...

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T#:17704695

Part#: 11537637059

Ships in 4 Business Days

$ 59.99

This product was last offered at the strikethrough price on
10-22-2026

$ 58.79 USD

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$ 58.79 USD

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OE quality return hose for the cooling system.

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