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Bremmen Parts BMW Cooling System Parts & Accessories for BMW X Series E71 (2008-2014)

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

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T#:637061

Part#: 11537586885

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$ 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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Water Heater Control Valve

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T#:3018052

Part#: 64116910544

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$ 68.54 USD

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Keep your HVAC system running properly with a new Water Heater Control Valve.

Thermostat

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T#:26538316

Part#: 11537601158

Ships on Jul 7, 2026

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$ 76.70 USD

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Coolant Hose

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T#:30729017

Part#: 17127576371

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$ 102.81 USD

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Bremmen Upper Radiator Coolant Hose - BMW E70 E71 F15 F16 N55 3.0L ...

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T#:50381391

Part#: 17127586774

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Replacement coolant hose for your BMW that connects the oil filter housing and heater core pipe to the radiator. Replace old, leaking coolant hoses to prevent coolant loss and overheating.

Low Temperature Thermostat - 97C

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T#:33612901

Part#: 11537601158-97C

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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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$ 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

Bremmen Lower Radiator Coolant Hose - E70 E71 F15 F16 N63

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T#:50381401

Part#: 17127576358

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$ 83.10 USD

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Connects the lower radiator to the water pump Replace leaking hoses to prevent coolant loss and overheating

Bremmen Parts O-Ring

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T#:399143

Part#: 11537545278

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$ 4.07 USD

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Seals your cooling system

Thermostat - 105C

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T#:15511827

Part#: 11537502779

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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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Oil Cooler Thermostat

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T#:15511834

Part#: 17107558267

Ships on Jun 26, 2026

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$ 18.68 USD

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Replace a failing thermostat with an OE replacement to get your car back up and running great again!

N54 Coolant Hose/Elbow - 11537545665

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T#:36100140

Part#: 11537545665

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$ 13.05 USD

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This Coolant Hose is located behind the thermostat on N54-equipped BMW models. Due to weak rubber construction and its close proximity to the bank one turbocharger, this hose is a common failure item on high-mileage vehicles.

Whether you are replacing a failed hose or preemptively servicing your cooling system, choose this high-quality replacement from Bremmen Parts for a lasting repair.

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Vent Hose

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T#:39295552

Part#: 17127576363

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$ 22.02 USD

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