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BMW Cooling System Parts & Accessories for BMW E71 X6 ActiveHybrid N63 4.4L

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

In Stock

Sale - Save 3% $ 146.99

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

$ 142.66 USD

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Sale - Save 3%

$ 146.99

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

$ 142.66 USD

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Water Pump And Thermostat Kit - E70 E71 F01 F02 F06 F07 F10 F12 F13 ...

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T#:554065

Part#: 11517548263KT3

Ships in 3 Business Days

Sale - Save 20% $ 336.99

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

$ 269.01 USD

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Sale - Save 20%

$ 336.99

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

$ 269.01 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:

Thermostat
Water pump
Coolant

This item fits the following BMW Engines:
N63,N63N,S63,N62N

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Turbo Coolant Line Kit - F70, E71, F15, F16

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T#:41661213

Part#: 11537577014TKT

Ships in 3 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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Auxillary Fan Switch

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T#:4934936

Part#: 3148210000

Special Order: No Guaranteed ETA

$ 18.99 USD

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$ 18.99 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. Also known as the coolant temperature sending unit, comes with related o-ring

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Meyle Coolant Expansion Tank - BMW E70 E71

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T#:35998394

Part#: 17138621092

Special Order: No Guaranteed ETA

$ 85.99 USD

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$ 85.99 USD

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The coolant expansion tank in your vehicle provides extra space for fluid expansion and contraction due to temperature changes. Because it regularly experiences these fluctuations, it can become prone to cracks or breaks over time. To ensure that all coolant remains within the system, it's important to replace the tank if it has been damaged, such as with cracks, broken nipples, or damaged mounting points.

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