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BMW Cooling System Parts & Accessories for BMW 6 Series E64 (2004-2010)

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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

T#:15744051

Part#: 82142209769KT

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05-03-2026

$ 142.76 USD

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

T#:554067

Part#: 11517531859KT4

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$ 224.38 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

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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Coolant Expansion Tank - E60 M5,E63 M6

T#:22514

Part#: 17112283345

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Sale - Save 5% $ 204.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 193.99 USD

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This high quality Genuine BMW expansion tank is used on the S85 V10 engines, and is a common failure item. Be leary of competitors selling this part for less -- is it a Genuine BMW? Probably not. We only carry the Genuine BMW brand expansion tank as it is the only one we use in our own BMWs. If you are overhauling your coolant system, now is the time to consider preventative replacing this expansion tank. We have found that the expansion tanks should be replaced based on age as well as condition. Expansion tanks seem to have a lifespan of less than six years before they show signs of fatigue and wear. Pre-emptively replacing the expansion tank as part of an overall maintenance plan can prevent you from getting stranded from a sudden failure later on. While replacing the expansion tank we recommend replacing the level sensor (sold below) as these are also common failure items.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
2004-2010 E60 BMW M5
2004-2010 E63 BMW M6

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Genuine BMW Coolant Supply Hose - Cyl 6-10 - E60 M5, E63 M6

T#:14611

Part#: 11537836569

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Sale - Save 6% $ 55.99

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$ 52.57 USD

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Radiator hoses will split and/or leak after a long period of time due to the rubber going through so many heat cycles and becoming weak. Prevent coolant loss with a genuine BMW replacement coolant hose.

Genuine BMW Supply Hose - Cyl. 6-10
This item fits the following BMW Chassis:
E60 M5,E63 M6,E63

Fits BMW Engines including:
S85

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Genuine BMW Coolant Supply Hose - Cyl 1-5 - E60 M5, E63 M6

T#:14608

Part#: 11537834052

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Sale - Save 4% $ 77.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 74.99 USD

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Radiator hoses will split and/or leak after a long period of time due to the rubber going through so many heat cycles and becoming weak. Prevent coolant loss with a genuine BMW replacement coolant hose.

Genuine BMW Supply Hose - Cyl. 1-5
This item fits the following BMW Chassis:
E60 M5, E63 M6, E63

Fits BMW Engines including:
S85

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Genuine BMW Water Hose - Expansion Tank to Radiator (Vent Hose) - E60...

T#:22520

Part#: 17122282954

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Sale - Save 23% $ 69.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 53.99 USD

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$ 69.99

This product was last offered at the strikethrough price on
01-23-2026

$ 53.99 USD

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Genuine BMW Vent Pipe
This item fits the following BMW Chassis:
E60 M5,E63 M6,E63

Fits BMW Engines including:
S85

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

T#:640141

Part#: 13621433077

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$ 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

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

T#:1195937

Part#: 17427543282

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Sale - Save 5% $ 722.15

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$ 686.04 USD

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Cooling fan with housing

Thermostat - 105C

T#:15511827

Part#: 11537502779

Ships on Aug 13, 2026

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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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Bav Auto Temperature Sensor - BMW E39 E46 E9X E60 F01/02

T#:639833

Part#: 13621433076

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$ 11.99 USD

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This is the coolant temperature sensor used in many BMW models from the late-1990s to the mid-2010s. The engine computer relies on the coolant temp to set the fuel mapping for the engine. As the car warms up the computer changes the fuel mixture. If your car is running a bit rich (too much fuel) it could be because this sensor is failing and not sending the correct info to the computer. This sensor is located in a variety of places depending on the engine. But it's one of those easy replacement items 'while you're in there' when doing a water pump or thermostat replacement. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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Bav Auto Coolant Expansion Tank - E60 E61 E63 E64 M54 N52 N62 ...

T#:640491

Part#: 17137542986

Special Order: No Guaranteed ETA

Sale - Save 10% $ 54.99

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05-03-2026

$ 49.49 USD

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This Bav Auto cooling system expansion tank/coolant reservoir is a direct replacement for the factory unit. Replace your cracked or leaking radiator expansion tank today. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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