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

T#:637061

Part#: 11537586885

In Stock

Sale - Save 20% $ 93.99

This product was last offered at the strikethrough price on
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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Gates Performance Thermostat - 71*C - BMW S65 S85

T#:394624

Part#: 11537836155

Ships in 1-3 days

$ 78.99 USD

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Performance low-temperature thermostat for E90, E92, E93 M3 - S65 engine- E60 M5 E63 M6 with S85 engine. Your car may still operate fine according to the instrument display but the electrically-operated thermostat may be going bad.

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FAE Coolant Temperature Sensor - E46 E39 E82 E9X E60 E63 E38 E65 X3 X...

T#:2472

Part#: 13621433077

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$ 22.99 USD

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$ 22.99 USD

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This Cooling system temperature sensor mounts into the lower radiator hose.

This item fits the following BMWs:
2008+ E82 BMW 128i
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3
2006+ E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi
2007+ E92 BMW 328i 328xi 328i xDrive
2007+ E93 BMW 328i
1999-2003 E39 BMW 525i 528i 530i 540i M5
2004-2010 E60 BMW 525i 525xi 530i 530xi 545i 550i M5
2004+ E63 BMW 645ci 650i M6
1999-2001 E38 BMW 740i 740il 750il
2002-2008 E65 BMW 745i 745li 750i 750li 760i 760li
2004-2006 E83 BMW X3 2.5i X3 3.0i
2000-2006 E53 BMW X5 3.0i X5 4.4i X5 4.6is X5 4.8is
2007-2013 E70 BMW X5 3.0si X5 4.8i X5 xDrive30i X5 xDrive48i X5M
2007-2014 E71 BMW X6 xDrive50i X6M
2003-2008 Z4 BMW Z4 2.5i Z4 3.0i Z4 3.0si Z4 M Roadster M Coupe

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OEM Febi Auxiliary Fan Switch

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T#:340712

Part#: 13621433077

Ships on Oct 19, 2026

$ 29.99 USD

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$ 29.99 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.

BMW Coolant / Antifreeze - 1.5L

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T#:16175674

Part#: 82141467704

Ships on Oct 19, 2026

$ 70.99 USD

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$ 70.99 USD

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Coolant G11 (Concentrate). The right anti-freeze agent makes a key contribution towards the reliable functioning of the engine cooling system under all operating and weather conditions. Cooler anti-freeze agents from Febi are precisely matched to the special requirements of the vehicle manufacturer and offer reliable protection from damages caused by freezing, corrosion, and cavitation. A good functioning cooling system is a primary prerequisite for the optimum operation of the engine. The ideal mixing ratio is 1:1, which offers frost protection to -36° C. With a ratio of 1:1 of water and concentrate, the boiling point of the cooling is approximately 107° C.+ High protection against freezing, corrosion, and cavitation Prevention of deposits and foam formation

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Upper Radiator Hose

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:377397

Part#: 17127519248

Ships in 1 Business Day

$ 93.99 USD

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$ 93.99 USD

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Attaches to the water pump

Expansion Tank Vent Hose

For vehicles with production date up to 07/2004

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T#:591986

Part#: 17127519247

Ships in 3 Business Days

$ 29.99 USD

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With quick connect coupling

Meistersatz CAP- EXPANSION TANK

T#:1195781

Part#: 17117639021

Ships in 3 Business Days

$ 30.99

This product was last offered at the strikethrough price on
07-07-2026

$ 29.99 USD

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$ 29.99 USD

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Rein Water Pump Return Hose - E60, E63, E64

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T#:592005

Part#: 17127540667

Ships in 3 Business Days

$ 26.99 USD

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$ 26.99 USD

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Hose that pulls water from the water pump and disperses it to your engine

Rein Upper Radiator Hose - E60, E63, E64

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T#:592004

Part#: 17127540665

Ships in 1 Business Day

$ 79.99 USD

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$ 79.99 USD

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Connects water pump to radiator

OEM Rein Coolant Expansion Tank Return Hose - E60 E63

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T#:19545

Part#: 17127545653

In Stock at Vendor

$ 53.99

This product was last offered at the strikethrough price on
05-07-2026

$ 52.99 USD

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$ 52.99 USD

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This is the coolant reservoir expansion tank return hose that connects to the bottom of the expansion tank. Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.

This item fits the following BMWs:
2004-2010 E60 BMW 545i 550i
2004-2010 E63 BMW 645ci 650i

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Coolant Hose

For vehicles with automatic transmission only

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T#:379793

Part#: 17127534918

In Stock at Vendor

$ 90.99 USD

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From water pump to radiator

Expansion Tank Vent Pipe

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T#:402415

Part#: 17127521775

In Stock at Vendor

$ 28.99 USD

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$ 28.99 USD

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Replace your cracked and leaking hose with this replacement from Rein

Radiator Vent Hose

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T#:592001

Part#: 17127534917

Ships in 1 day

$ 38.23 USD

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$ 38.23 USD

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Replace your cracked & leaking hose

Behr Radiator - E60, E61, E63, E64

For vehicles with manual transmission

T#:579569

Part#: 376755591

Back Ordered

$ 267.99 USD

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$ 267.99 USD

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Replace your leaking radiator

Coolant Hose

For vehicles with production date from 07/2004

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T#:393277

Part#: 17127542540

In Stock

$ 51.99 USD

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Attaches to the vent port on the expansion tank

Rein Expansion Tank Cap

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T#:384807

Part#: 17117639021

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$ 16.99 USD

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$ 16.99 USD

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Cap for plastic expansion tank

Rein Cooling O-Ring - E53, E60, E63, E64, E65, E66, E70

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T#:362446

Part#: 11531710048

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$ 4.07 USD

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$ 4.07 USD

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Seals the rear of the water transfer pipe to the block

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

T#:640141

Part#: 13621433077

In Stock

Sale - Save 20% $ 20.99

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

$ 16.79 USD

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$ 20.99

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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

Febi Temperature Sensor

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T#:340711

Part#: 13621433076

In Stock at Vendor

$ 17.99

This product was last offered at the strikethrough price on
06-22-2026

$ 16.99 USD

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$ 16.99 USD

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Monitors coolant / oil temperature

OEM Rein Coolant Hose - BMW E60 E63/E64 E65/E66

T#:45791754

Part#: 17127508011R

Ships in 3 Business Days

$ 35.99 USD

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$ 35.99 USD

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This hose runs from the lower radiator port on the passenger side of the radiator to the water pump on the engine. Rubber hoses can crack over time, leading to coolant loss. Replace your hose with this OEM Rein hose to eliminate leaks and prevent overheating.

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Coolant Hose

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T#:591989

Part#: 17127519254

In Stock at Vendor

$ 48.18 USD

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$ 48.18 USD

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Attaches to the vent port on the expansion tank

OEM Rein Coolant Hose w/ Temperature Sensor - BMW E60 E63/E64 E65/E66...

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T#:375746

Part#: 17127508011

In Stock at Vendor

$ 75.99 USD

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$ 75.99 USD

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This hose runs from the lower radiator port on the passenger side of the radiator to the water pump on the engine. Rubber hoses can crack over time, leading to coolant loss. Replace your hose with this OEM Rein hose to eliminate leaks and prevent overheating.

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Febi Coolant Pipe - E53, E60, E63, E64, E65, E66, E70, F02

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T#:385560

Part#: 11511439976

Ships in 1 Business Day

$ 20.99

This product was last offered at the strikethrough price on
05-07-2026

$ 17.99 USD

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$ 17.99 USD

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Connects the inlet of the water pump to the valley pan

Cool Retrun Hose

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T#:379713

Part#: 17127540666

Ships in 3 Business Days

$ 80.99 USD

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$ 80.99 USD

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Connects to the radiator

Rein Coolant Expansion Tank - E60, E61, E63, E64

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T#:402160

Part#: 17137542986

Ships in 1 Business Day

$ 82.99 USD

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$ 82.99 USD

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Includes fluid level sensor

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

T#:1195937

Part#: 17427543282

Ships in 1 day

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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$ 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

Thermostat - 105C

T#:15511827

Part#: 11537502779

Ships on Aug 14, 2026

Sale - Save 3% $ 46.99

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

$ 45.58 USD

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Sale - Save 3%

$ 46.99

This product was last offered at the strikethrough price on
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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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BMW Radiator Hose

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T#:38553886

Part#: 17127519252

Special Order: No Guaranteed ETA

$ 36.99 USD

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$ 36.99 USD

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### **Febi Radiator Hose** Ensure your engine stays cool and efficient with the **Febi Radiator Hose**, designed for exceptional durability, flexibility, and OEM-quality performance. This premium replacement hose promotes proper coolant circulation, preventing leaks and overheating for reliable engine operation. #### **Key Features:** - **OEM-Grade Construction** – Crafted to meet or exceed factory specifications for a perfect fit and reliable performance. - **Heat & Pressure Resistant** – Built from high-quality materials to withstand extreme temperatures and coolant system pressure. - **Leak-Resistant Design** – Provides a secure, tight seal to prevent coolant loss and maintain efficiency. - **Durable & Flexible** – Reinforced to resist cracking, swelling, and wear for long-term use. - **Easy Installation** – Direct-fit replacement with no modifications needed for a hassle-free upgrade. Enhance your cooling system with the **Febi Radiator Hose**, ensuring optimal engine temperature regulation and long-lasting protection.

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BMW Oil Cooler

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T#:38385316

Part#: 17217507974

Special Order: No Guaranteed ETA

$ 66.99 USD

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$ 66.99 USD

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The BMW oil cooler maintains optimal engine oil temperature, preventing overheating and ensuring proper lubrication for improved performance and longevity.

Expansion Tank Cap

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T#:382437

Part#: 17117639021

Special Order: No Guaranteed ETA

$ 25.99 USD

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$ 25.99 USD

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Maintain maximum cooling efficiency and system pressure with this Febi Bilstein 2.0 bar replacement cap.

Water Pump With Gasket

T#:56218609

Part#: 11517586779

Special Order: No Guaranteed ETA

$ 113.99 USD

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$ 113.99 USD

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Protect your BMW V8 against thermal stress and overheating with this heavy-duty water pump from Febi Bilstein.

New Water Pump - With O-Ring - Metal Impellar

T#:56074199

Part#: 11517838201

Ships on Nov 19, 2026

$ 99.99 USD

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$ 99.99 USD

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Rein Coolant Return Pipe - N62 N73

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T#:386411

Part#: 11511439976

Special Order: No Guaranteed ETA

$ 14.99 USD

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$ 14.99 USD

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This is the coolant return pipe on the back of the water pump on the N62 and N73 engines used in the E53 X5, E60 545/550, E63 645/650, E65 745/750, E70 X5, and F02 750. This pipe connects the water pump to the valley pan and it's a compression fitting (no o-rings). Whenever the water pump or valley pan are replaced this tube should also be replaced. This is one area where you don't want to go back and re-do your work because of a leaking fitting! In German, Rein means Pure. In the automotive industry the Rein name has quickly come to represent quality. With fitments for some of the worldaEURtms finest automobiles including BMW and Mini and guaranteed OE quality, Rein is a name you can trust.

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BMW Expansion Tank With Cap

T#:46616010

Part#: EPK0128

Ships in 3 Business Days

$ 86.99

This product was last offered at the strikethrough price on
04-28-2026

$ 74.99 USD

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$ 74.99 USD

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The coolant expansion tank acts as a reservoir for excess coolant as it expands and contracts with temperature changes. Over time, the constant exposure to extreme heat cycles can cause the tank to crack, break, or suffer damage to its nipples or mounting points. To keep coolant properly contained within the system, a damaged tank should be replaced promptly.

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BMW Heater Control Valve

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T#:16907152

Part#: 64110301939

Special Order: No Guaranteed ETA

$ 199.99 USD

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$ 199.99 USD

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This valve controls the flow of the coolant into the heater core, which allows warm air to be pushed through the HVAC system.

Meistersatz Temperature Sensor

T#:379740

Part#: 13621433076

Ships in 3 Business Days

$ 15.99 USD

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$ 15.99 USD

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Monitors coolant / oil temperature

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