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Bremmen Parts BMW Cooling System Parts & Accessories for BMW 7 Series E38 (1995-2001)

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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 With Housing - 90C

For vehicles with a production date from 09/1998

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:598978

Part#: 11531436386

In Stock

Sale - Save 20% $ 93.99

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05-03-2026

$ 75.06 USD

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$ 93.99

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$ 75.06 USD

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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 help 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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Coolant Expansion Tank

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T#:36032353

Part#: 17111741167

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Sale - Save 21% $ 59.99

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05-03-2026

$ 47.32 USD

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$ 59.99

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

$ 47.32 USD

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Upper Radiator Hose - E38 E39 M62

For vehicles with production date from 09/1998

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:36100134

Part#: 11537505228

In Stock

$ 52.99

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

$ 38.99 USD

Limited Qty Sale

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$ 52.99

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

$ 38.99 USD

Limited Qty Sale

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This OEM-style upper radiator hose connects the upper radiator outlet to the thermostat housing.

If you're experiencing a leak or wear in your radiator hose, replace it with this high-quality, cost-effective replacement from Bremmen Parts to restore optimal cooling system performance.

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Bremmen Coolant Bleeder Screw - BMW E30 E36 E38 E39 E46 E83 E90 Z4 ...

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T#:640140

Part#: 17111712788

In Stock

Sale - Save 39% $ 3.99

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

$ 2.44 USD

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$ 3.99

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$ 2.44 USD

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Plastic bleeder screw for cooling system is used to bleed air that would otherwise create an air pocket and lead to overheating. Includes o-ring seal.

Radiator Hose - Lower

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:39768309

Part#: 11531741409

In Stock

Sale - Save 22% $ 19.99

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

$ 15.50 USD

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Sale - Save 22%

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$ 15.50 USD

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

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:640141

Part#: 13621433077

In Stock

Sale - Save 22% $ 20.99

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

$ 16.31 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

Thermostat With Housing - 105C

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:15511816

Part#: 11531436386

Ships in 9 Business Days

Sale - Save 4% $ 30.99

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

$ 29.67 USD

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Sale - Save 4%

$ 30.99

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

$ 29.67 USD

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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 help 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.

Show More Show Less

Bremmen Parts Thermostat Assembly - E38, E39

For vehicles with production date up to 09/1998

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:388457

Part#: 11531437526

Back Ordered

Sale - Save 15% $ 56.99

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

$ 48.44 USD

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Sale - Save 15%

$ 56.99

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

$ 48.44 USD

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Comes with aluminum housing, o-ring & sensor

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