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BMW Cooling System Parts & Accessories for BMW 7 Series E65 (2002-2008)

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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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Thermostat Replacement kit - 90C

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T#:15744051

Part#: 82142209769KT

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05-03-2026

$ 142.66 USD

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This product was last offered at the strikethrough price on
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$ 142.66 USD

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Water Pump Replacement Kit - E60 550i, E63 650i, E65 750i, E70 X5 4.8...

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T#:554067

Part#: 11517531859KT4

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01-13-2026

$ 224.28 USD

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$ 224.28 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:

Mahle-Behr thermostat
Geba water pump
Vaico coolant
Mounting hardware required for the water pump

This item fits the following BMWs:
2006-2010 E60 BMW 550i
2006-2010 E63 BMW 650i
2005-2008 E65 BMW 750i 750li
2007-2013 E70 BMW X5 4.8i X5 xDrive48i

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Performance Thermostat - 90C - N62, N63, S63, N73, S55

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T#:637061

Part#: 11537586885

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05-03-2026

$ 75.06 USD

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Includes housing and sealing o-ring A thermostat that opens sooner promotes better cooling in your vehicle. Running a lower temperature thermostat will keep everything much cooler. Keeping the engine cooler will help reduce and improve the life of the seals in your engine, saving you time and money, while also helping to increase engine performance. A tune might be required to gain the most from this modification, as well as to get your car's ECU accustomed to seeing lower temperatures.

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Bremmen Auxiliary Fan Temperature Switch - E46 E39 E9X E60 E70 E53 ...

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T#:640141

Part#: 13621433077

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05-03-2026

$ 16.79 USD

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The auxiliary fan switch activates the auxiliary cooling fan to provide additional cooling under high heat loads, and when the car is stationary

Meyle Expansion Tank Cap

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T#:579357

Part#: 3148009004

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05-15-2026

$ 8.99 USD

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Replace worn or missing pieces.

Bremmen Parts Radiator Cooling Fan Assembly - E60, E61, E63, E64, E65...

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T#:1195937

Part#: 17427543282

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Sale - Save 5% $ 722.15

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

$ 686.04 USD

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Cooling fan with housing

Cooling Fan Shroud - E60, E61, E65

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T#:22525965

Part#: 17427514560

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Sale - Save 3% $ 206.03

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

$ 199.85 USD

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$ 199.85 USD

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Direct replacement for cracked or broken cooling fan shroud. Found on 525i, 525xi, 530i, 530xi, 745i.

Thermostat - 105C

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T#:15511827

Part#: 11537502779

Ships on Jul 31, 2026

Sale - Save 3% $ 46.99

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05-03-2026

$ 45.58 USD

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$ 46.99

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$ 45.58 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.

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