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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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Turner Motorsport - Corporate Logo
T#:56327183
Part#: 060289LA02
In Stock
New Item
$ 349.99

This product was last offered at the strikethrough price on
07-23-2026

$ 329.99 USD
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$ 329.99 USD
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BMWs are well-known for their problematic cooling systems, which are often the cause of irreversible engine damage and a hefty repair bill. The coolant expansion tank—a crucial component responsible for holding hot engine coolant under high pressure—is a common cause of cooling system issues. Unfortunately, BMW chose to manufacture the factory F8X expansion tank out of plastic. After years of exposure to high coolant temperatures, ambient engine bay heat, and chemical-rich antifreeze, the plastic degrades, eventually weakening enough to fail catastrophically. With this issue in mind, our team of BMW enthusiasts engineered the ultimate cooling system upgrade for F80 M3, F82/F83 M4, and F87 M2 Competition owners: a robust intercooler expansion tank that is built to last! Constructed from durable 5052 TIG-welded aluminum, this tank withstands high temperatures and pressures without deteriorating over time. Unlike the OEM molded plastic tank, this alternative is not prone to cracking, leaking, or weakening. With the Turner Motorsport Aluminum Intercooler Expansion Tank Kit, you'll never experience expansion tank failure again! Ideal for track-driven cars, this upgrade prevents catastrophic failures that cause charge-air temp spikes and limp mode due to coolant loss in a system with no level sensor. Unlike other aftermarket coolant reservoirs, this tank retains the factory coolant capacity and features a laser-cut Turner logo plate at the top of the tank to provide an exact level for filling. To guarantee exact fitment, the upgraded tank was designed using advanced 3D CAD modeling. All bungs, nipples, and fittings are precision-machined to ensure a secure seal with factory hose ends. Designed for both high-performance builds and daily drivers, the tank features a premium wrinkle black powder coat for a sleek "OEM+" look. This durable finish goes beyond style—it prevents corrosion for long-lasting reliability. Avoid the risks of the factory expansion tank—upgrade your S55-equipped BMW today and drive with confidence!
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Turner Motorsport Silicone Radiator Hoses - F8X S55
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:57543678
Part#: 008643LA04KT
In Stock
New Item
$ 89.99 USD
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$ 89.99 USD
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Tired of dealing with brittle, dry-rotted rubber hoses? Whether you're refreshing your cooling system or replacing aging components, our Silicone Radiator Coolant Hose Set is the ultimate upgrade. Designed for durability, performance, and a factory-perfect fit, these premium silicone hoses outperform standard rubber in every way.

Why Choose Silicone Over Rubber?

Made from heavy-duty, reinforced 4-ply fluorosilicone, Turner Motorsport hoses withstand extreme temperatures and pressures far beyond OEM rubber hoses. Engineered to resist oil, fuel, and electrochemical degradation, these hoses are tested for continuous operation at 250°F and over 45 psi, delivering superior reliability, reduced turbulence, and improved coolant flow.

Replaces OEM Part Numbers: 11537848501 & 11537848502. Can be used with your factory connectors.

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Turner Motorsport - Corporate Logo
T#:57543703
Part#: 059198LA03KT
In Stock
New Item
$ 62.99 USD
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Upgrade your cooling system setup with our Heavy Duty Radiator Mounting Brackets, engineered to deliver maximum structural support and a refined engine-bay aesthetic. After decades of heat cycles and hard driving, your E30's factory plastic mounts inevitably become brittle, faded, and prone to cracking, risking damage to your radiator. Our radiator mount upgrade completely replaces those tired OEM units with a high-strength alternative built to handle the rigors of spirited driving, track days, and engine swaps. Whether you are performing a full cooling system refresh or executing an M5X swap that utilizes an E36-style radiator, these brackets provide the ideal balance of precision fitment and rugged dependability.

Crafted with a premium brushed stainless steel finish, this kit does more than secure your radiator; it radically improves the visual appeal under the hood by swapping out cheap, weathered plastic for durable steel hardware. Designed as a true direct bolt-on solution, the brackets align seamlessly with factory mounting locations, eliminating the need for frustrating custom fabrication, cutting, or drilling. They clamp down firmly to eliminate unwanted radiator movement, ensuring your cooling stack remains locked in place under heavy vibration.

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Radiator Hose - Lower
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:53008808
Part#: 17127564478
In Stock
New Item
Sale - Save 20% $ 37.99

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

$ 30.39 USD
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Sale - Save 20%
$ 37.99

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

$ 30.39 USD
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Coolant Expansion Tank - With Cap
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:55497428
Part#: 17137640514
Ships on Nov 10, 2026
New Item
Sale - Save 10% $ 69.99

This product was last offered at the strikethrough price on
10-08-2026

$ 62.99 USD
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Sale - Save 10%
$ 69.99

This product was last offered at the strikethrough price on
10-08-2026

$ 62.99 USD
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Radiator Fan Clutch
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:56507828
Part#: 11527502804
Ships on Nov 10, 2026
New Item
Sale - Save 10% $ 85.99

This product was last offered at the strikethrough price on
10-08-2026

$ 77.39 USD
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Sale - Save 10%
$ 85.99

This product was last offered at the strikethrough price on
10-08-2026

$ 77.39 USD
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New Water Pump - With O-Ring - Metal Impellar
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:56074199
Part#: 11517838201
Ships on Nov 19, 2026
New Item
$ 99.99 USD
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Water Pump - Metal Impeller
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:55030824
Part#: 11517550484
Ships on Nov 27, 2026
New Item
Sale - Save 10% $ 47.99

This product was last offered at the strikethrough price on
10-08-2026

$ 43.19 USD
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Sale - Save 10%
$ 47.99

This product was last offered at the strikethrough price on
10-08-2026

$ 43.19 USD
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B58 Upgraded Mechanical Water Pump
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:56760924
Part#: 11518632585M
Ships on Dec 14, 2026
New Item
Sale - Save 10% $ 89.99

This product was last offered at the strikethrough price on
10-08-2026

$ 80.99 USD
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$ 89.99

This product was last offered at the strikethrough price on
10-08-2026

$ 80.99 USD

Water Pump - Mechanical W/ Metal Impeller
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:56869518
Part#: 11517801063
Ships on Dec 14, 2026
New Item
Sale - Save 19% $ 89.99

This product was last offered at the strikethrough price on
10-21-2026

$ 72.99 USD
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Sale - Save 19%
$ 89.99

This product was last offered at the strikethrough price on
10-21-2026

$ 72.99 USD
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Radiator Fan Clutch
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:57304041
Part#: 11527831619
Ships on Dec 29, 2026
New Item
Sale - Save 10% $ 75.99

This product was last offered at the strikethrough price on
10-08-2026

$ 68.39 USD
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Sale - Save 10%
$ 75.99

This product was last offered at the strikethrough price on
10-08-2026

$ 68.39 USD
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E30 Coolant Expansion Tank
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:57507437
Part#: 17111712641
Ships on Jan 11, 2027
New Item
Sale - Save 6% $ 49.99

This product was last offered at the strikethrough price on
10-21-2026

$ 46.99 USD
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Sale - Save 6%
$ 49.99

This product was last offered at the strikethrough price on
10-21-2026

$ 46.99 USD
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Water Pump With Support Bracket
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:58271045
Part#: 11517644809
Ships on Jan 11, 2027
New Item
Sale - Save 10% $ 189.99

This product was last offered at the strikethrough price on
10-08-2026

$ 170.99 USD
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Sale - Save 10%
$ 189.99

This product was last offered at the strikethrough price on
10-08-2026

$ 170.99 USD
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Thermostat - 80°C
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:57507417
Part#: 11531318274
Ships on Jan 11, 2027
New Item
Sale - Save 10% $ 59.99

This product was last offered at the strikethrough price on
10-08-2026

$ 53.99 USD
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Sale - Save 10%
$ 59.99

This product was last offered at the strikethrough price on
10-08-2026

$ 53.99 USD
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Coolant Expansion Tank
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:53044121
Part#: 17137601948
In Stock
New Item
Sale - Save 8% $ 72.99

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

$ 67.49 USD
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Sale - Save 8%
$ 72.99

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

$ 67.49 USD
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Heater Core Supply Hose
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:58271049
Part#: 64216983858
Ships on Jan 28, 2027
New Item
Sale - Save 10% $ 46.99

This product was last offered at the strikethrough price on
10-08-2026

$ 42.29 USD
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$ 46.99

This product was last offered at the strikethrough price on
10-08-2026

$ 42.29 USD
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Auxiliary Water Pump
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:58745792
Part#: 11517583965
Ships on Feb 4, 2027
New Item
Sale - Save 10% $ 179.99

This product was last offered at the strikethrough price on
10-08-2026

$ 161.99 USD
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$ 179.99

This product was last offered at the strikethrough price on
10-08-2026

$ 161.99 USD
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Mechanical Water Pump
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:57086679
Part#: 11518638026
Ships on Feb 11, 2027
New Item
Sale - Save 13% $ 119.99

This product was last offered at the strikethrough price on
10-08-2026

$ 104.99 USD
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Sale - Save 13%
$ 119.99

This product was last offered at the strikethrough price on
10-08-2026

$ 104.99 USD
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Coolant Return Hose - Engine To Radiator
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:57471130
Part#: 17128616548
Ships on Feb 22, 2027
New Item
Sale - Save 10% $ 99.99

This product was last offered at the strikethrough price on
10-08-2026

$ 89.99 USD
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Sale - Save 10%
$ 99.99

This product was last offered at the strikethrough price on
10-08-2026

$ 89.99 USD
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Returns coolant from the engine block to the radiator