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
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T#:15744051
Part#: 82142209769KT
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05-03-2026

$ 142.66 USD
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$ 146.99

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$ 142.66 USD
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Water Pump Replacement Kit - E60 550i, E63 650i, E65 750i, E70 X5 4.8...
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T#:554067
Part#: 11517531859KT4
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Sale - Save 19% $ 275.99

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01-13-2026

$ 224.28 USD
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Sale - Save 19%
$ 275.99

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$ 224.28 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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Water Pump And Thermostat Kit - E60 M5 E63 M6 E64 M6
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T#:554066
Part#: 11517838201KT2
Ships in 2 Business Days
Sale - Save 28% $ 287.99

This product was last offered at the strikethrough price on
04-07-2026

$ 206.93 USD
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Sale - Save 28%
$ 287.99

This product was last offered at the strikethrough price on
04-07-2026

$ 206.93 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
  • O-rings for the thermostat housing

 

This item fits the following BMWs:
2005+ E60 BMW M5
2005+ E63 BMW M6

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Expansion Tank Replacement Kit - E60 M5,E63 M6
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T#:584232
Part#: 17112283345KT
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$ 249.99 USD
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$ 249.99 USD
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The expansion tank in your BMW is a vital component of the cooling system, and because of the constant abuse from heat and temperature changes, it often fails. This kit contains all of the basic items needed for a tank replacement.
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Thermostat & Water Pump Replacement Kit - BMW N62 4.8L
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T#:30397457
Part#: 11517586779KT2
Ships in 1 Business Day
$ 273.99

This product was last offered at the strikethrough price on
05-12-2026

$ 270.99 USD
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$ 270.99 USD
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Maintain your BMW's cooling system and avoid costly repairs with our comprehensive Water Pump and Thermostat Replacement Kit, meticulously crafted by the experts at Turner Motorsport! Designed to service BMW models with the N62 engine, this kit ensures your vehicle runs at optimal temperature, preventing overheating and extending engine life.

Key Benefits:

All-Inclusive Kit: This package includes everything you need for a complete cooling system overhaul, saving you time and effort sourcing individual components. High-Quality Components: Each part in this kit is manufactured to meet or exceed OEM standards, guaranteeing reliable performance and longevity. Optimal Cooling Performance: Regularly replacing your water pump and thermostat every 60,000 miles is crucial for maintaining peak cooling efficiency. Our kit ensures your BMW's engine stays within the ideal temperature range, preventing overheating and potential engine damage. Enhanced Reliability: By including premium components like the Wahler Thermostat and Graf Water Pump, this kit provides enhanced durability and peace of mind. Kit Contents:

Wahler Thermostat (Part #11537586885): Renowned for its precision and reliability, ensuring your engine maintains the correct operating temperature. Graf Water Pump (Part #11517586779): High-performance pump designed for consistent and efficient coolant circulation. Genuine BMW Hex Bolts (M6x25) (Part #07119905400): Essential hardware for secure installation. Genuine BMW Hex Bolts (M6x40) (Part #07119904525): Ensures all components are firmly in place. Genuine BMW Coolant/Antifreeze (Diluted, 1 Gallon) (Part #82141467704): Formulated specifically for BMW cooling systems, providing optimal protection against corrosion and freezing. Upgrade your BMW N62 cooling system with this expertly curated Water Pump and Thermostat Replacement Kit. Perfect for maintaining the health and efficiency of your engine, this kit is an essential investment for any BMW enthusiast. Order now from Turner Motorsport and ensure your vehicle performs at its best.

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E60 550i, E63 650i Manual Transmission Cooling Overhaul Package ...
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T#:338775
Part#: TMS216193
Ships in 1 day
$ 658.99

This product was last offered at the strikethrough price on
05-06-2026

Starting at $ 643.99 USD
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Starting at $ 643.99 USD
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The cooling system is one of the major weak points on the N62 engine in the 550i/650i. The water pump itself won't last more than 100,000 miles in most cases and the engine itself is prone to coolant leaks from multiple locations. So a major 550i cooling system overhaul should be planned before the 100,000 mile mark. Aside from obvious leaks the 550i water pump will also squeal or screech indicating the bearings inside have worn. This package covers the water pump, thermostat, and radiator for the 2006-2010 E60 550i and E63 650i with a manual transmission.

The entire cooling system on the 550i is susceptible to leaks and poor performance. The condition of the rest of the cooling system should be considered along with the water pump and thermostat. Replacing the water pump will expose the front of the V8 engine where more problem areas may appear so plan accordingly. The biggest problem is the V8 valley pan gaskets and inner coolant tube seals. The tube carrying coolant through the valley is prone to leaking and replacement is a major job (see our valley pan pipe kit here). Additional items recommended to be replaced during the water pump job are: cooling hoses, expansion tank and cap, temp sensors, drive belts, and pulleys and tensioners.

Base 550i/650i Cooling Package includes:

  • OEM Behr radiator (17117519210)
  • OEM water pump (11517586779)
  • water pump pipe (back of pump to engine block) (11511439976)
  • OEM thermostat (11537586885)
  • BUY AS A PACKAGE AND SAVE $$!

    This item fits the following BMWs:
    2006-2010 E60 BMW 550i with manual transmission
    2006-2011 E63 BMW 650i with manual transmission
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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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Hose that pulls water from the water pump and disperses it to your engine
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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Upper Radiator Hose
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Rein - Corporate Logo
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

Rein Upper Radiator Hose - E60, E63, E64
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T#:592004
Part#: 17127540665
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$ 79.99 USD
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$ 79.99 USD
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Connects water pump to radiator
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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$ 90.99 USD
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From water pump to radiator
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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$ 29.99 USD
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With quick connect coupling


Expansion Tank Vent Pipe
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Rein - Corporate Logo
T#:402415
Part#: 17127521775
In Stock at Vendor
$ 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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Replace your cracked & leaking hose
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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Seals the rear of the water transfer pipe to the block

Rein Expansion Tank Cap
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T#:384807
Part#: 17117639021
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$ 16.99 USD
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Cap for plastic expansion tank

Coolant Hose
For vehicles with production date from 07/2004
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T#:393277
Part#: 17127542540
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$ 51.99 USD
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$ 51.99 USD
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Attaches to the vent port on the expansion tank
Coolant Hose
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T#:591989
Part#: 17127519254
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$ 48.18 USD
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Attaches to the vent port on the expansion tank

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
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$ 82.99 USD
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$ 82.99 USD
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Includes fluid level sensor

OEM Rein Coolant Hose - BMW E60 E63/E64 E65/E66
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Rein - Corporate Logo
T#:45791754
Part#: 17127508011R
Ships in 3 Business Days
$ 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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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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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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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
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Rein - Corporate Logo
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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