BMW Cooling System Parts & Accessories for BMW E10 2002 M05 2.0L

Clear BMW chassis

Please ensure your correct model is selected

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.

Sub-Categories

Sort By:
Red Line Supercool Performance Coolant - Concentrate - 1 Gallon
Red Line Supercool Performance Coolant - Concentrate - 1 Gallon ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Redline - Corporate Logo
T#:640437
Part#: 81205
In Stock
$ 68.99 USD
Free Shipping
Add to Wish List
$ 68.99 USD
Free Shipping
Add to Wish List
Red Line SuperCool Concentrate fortified with WaterWetter is a concentrated antifreeze/coolant designed to maximize the performance of your cooling system with superior protection against cavitation corrosion/erosion. Using SuperCool Concentrate diluted with distilled water protects the entire cooling system keeping new components like new for 5 years/150,000 miles and prevents further damage to older components. Red Line’s proprietary coolant additive formula enhances the fluid’s ability to transfer heat, reducing operating temperatures by up to 20*F and prolonging the life of the entire cooling system. Red Line's SuperCool is an OAT coolant that is a Nitrate and Silicate Free product with its own proprietary corrosion technology to offer superior protection for aluminum engines found in all European vehicles, performance vehicles, as well as other applications. SuperCool will not void the factory warranty either. It can be used to top off the existing coolant of any BMW and will not cause any ill-effects on the cooling system because it is silicate and nitrate free. It is still better to flush it out and switch completely to SuperCool to get all the full benefits of the product in performance and protection.
Show More Show Less
Red Line SuperCool Performance Coolant - Pre-Mixed - 1 Gallon
Red Line SuperCool Performance Coolant - Pre-Mixed - 1 Gallon ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Redline - Corporate Logo
T#:640436
Part#: 81215
Ships on Aug 17, 2026
$ 54.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 54.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Red Line SuperCool Performance Coolant fortified with WaterWetter is a 50/50 prediluted antifreeze/coolant designed to maximize the performance of your cooling system with superior protection against cavitation corrosion/erosion. Using 100% SuperCool Performance protects the entire cooling system, keeping new components like new for 5 years/150,000 miles and prevents further damage to older components. Red Line’s proprietary coolant additive formula enhances the fluid’s ability to transfer heat, reducing operating temperatures by up to 20*F and prolonging the life of the entire cooling system. Red Line's SuperCool is an OAT coolant that is a Nitrate and Silicate Free product with its own proprietary corrosion technology to offer superior protection for aluminum engines found in all European vehicles, performance vehicles, as well as other applications. SuperCool will not void the factory warranty either. It can be used to top off the existing coolant of any BMW and will not cause any ill-effects on the cooling system because it is silicate and nitrate free. It is still better to flush it out and switch completely to SuperCool to get all the full benefits of the product in performance and protection.
Show More Show Less
Red Line Water Wetter Coolant Additive
Red Line Water Wetter Coolant Additive
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Redline - Corporate Logo
T#:394769
Part#: REDLINE5A
In Stock
Starting at $ 15.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Starting at $ 15.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Water Wetter is a unique wetting agent for cooling systems which reduces coolant temperatures by as much as 30*F. This liquid product can be used to provide rust and corrosion protection in plain water for racing engines, which provides much better heat transfer properties than glycol-based antifreeze.
Show More Show Less
Red Line Water Wetter Heat Transfer Agent
Red Line Water Wetter Heat Transfer Agent
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Redline - Corporate Logo
T#:3607
Part#: 1-WW-12Z
In Stock
$ 15.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 15.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Water Wetter is a unique wetting agent for cooling systems which reduces coolant temperatures by as much as 30*F. This liquid product can be used to provide rust and corrosion protection in plain water for racing engines, which provides much better heat transfer properties than glycol-based antifreeze. Or it can be added to new or used antifreeze to improve the heat transfer of ethylene and propylene glycol systems. Designed for modern aluminum, cast iron, copper, brass, and bronze systems.

We have been using RedLine Oil in our street cars and race cars for years. Hands-down, it is the Number One brand of high performance lubricant for BMWs.
Show More Show Less
OEM Rein Radiator Coolant Cap
OEM Rein Radiator Coolant Cap
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:38161716
Part#: 92810625703
Ships in 3 Business Days
$ 11.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 11.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Rein Automotive OE Quality caps are designed to be direct replacements for OE caps. Rein caps are designed to match or exceed the OE materials used and are produced to the highest standards to ensure long service life. Rein Automotive OE quality caps keep the coolant system at the proper pressure, just like the OE cap.
Show More Show Less
OEM Rein Cooling Hose - E10 1602, E10 2002tii
OEM Rein Cooling Hose - E10 1602, E10 2002tii
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:34214794
Part#: 11531266469
Ships in 3 Business Days
$ 14.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 14.99 USD
Free Shipping on orders $49 and up
Add to Wish List

Cooling Hose - CHR0915 by Rein is a premium replacement hose designed to deliver superior durability and performance. Manufactured by Rein Automotive, this cooling hose is engineered to meet or exceed OEM specifications, ensuring a perfect fit for a wide range of European vehicles. Ideal for preventing coolant leaks, overheating, and maintaining optimal engine temperature, the Cooling Hose - CHR0915 is a reliable solution for your vehicle's cooling system.

  • Direct-fit replacement for seamless installation
  • Engineered for durability and reliability
  • Reinforced construction for high-temperature resistance
  • Perfect for your classic BMW vehicles
  • Helps prevent coolant leaks and overheating

This cooling hose is a direct-fit replacement and comes with a reinforced design to withstand extreme temperatures and pressure fluctuations. It's an excellent choice for car enthusiasts and mechanics looking for high-quality, long-lasting parts. Turner Motorsport offers this premium hose, ensuring that your vehicle's cooling system performs at its best.

Show More Show Less
OEM Rein Radiator Cap - E21 E24 E10 E12 E23 E28
OEM Rein Radiator Cap - E21 E24 E10 E12 E23 E28
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:7395
Part#: 17111100848
In Stock at Vendor
$ 11.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 11.99 USD
Free Shipping on orders $49 and up
Add to Wish List
The radiator tank cap keeps necessary pressure on your coolant to increase efficiency. If you have an overheating issue in your vehicle, a simple, quick, and inexpensive part to replace is this cap. Often times, the coolant is not kept under enough pressure to keep it from boiling or expanding too much. This cap keeps all the heat and liquid inside the coolant system for maximum efficiency. Should be replaced each time major coolant system service is performed.
Show More Show Less

Select Vehicle

BMW Mini
Clear Vehicle

Purpose

Category

Brand

Price

$
$

Shipping