Find Parts That Fit Your Vehicle

BMW Cooling System Parts & Accessories

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:

Turner Motorsport - Corporate Logo
T#:12806793
Part#: 008378LA02
In Stock
Sale - Save 20% $ 479.99

This product was last offered at the strikethrough price on
06-14-2026

$ 383.99 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 479.99

This product was last offered at the strikethrough price on
06-14-2026

$ 383.99 USD
Free Shipping on orders $49 and up

Our Turner Motorsport's full aluminum expansion tank was designed and engineered in house to help with the weak point in your N52/N54 cooling system. The coolant expansion tank goes through heat cycles over and over again from regular driving, it is important that your expansion tank is doing its job to retain coolant to keep your engine operating temperatures down and keep your engine bay clean. Not only is this a major upgrade but also a great maintenance item to replace. Our expansion tank was designed to fit the OEM hoses for an easy install and comes with all the upgraded items you will need for a clean install

If your BMW needs a new expansion tank, make sure this is the last expansion tank you ever need to buy. Our coolant expansion tank has a full aluminum construction and wrinkle black powder coat for durability. Expansion tank kit comes with all the accessories you need to replace your expansion tank once, and never have to worry about it again.

Product Features:

Maintains stock coolant capacity and expansion volume
Designed to maintain OE coolant elevation, preventing air pockets
Baffled tank ensures that air pockets cannot be introduced during aggressive driving and provides accurate coolant level reading
Carefully designed bleed passage prevents the introduction of air as the engine cools
Turner engraved internal fill level
TIG welded 5052 aluminum construction
All bungs are machined to fit factory hose ends
Kit contents:

Turner Aluminum Expansion Tank
Coolant level sensor
Expansion tank cap
Heavy duty bleeder screw
Flared coolant pressure release line
Hardware for installation

Show More Show Less
Silicone Expansion Tank Relocation Heater Hose
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:21735881
Part#: 053082LA01
In Stock
Sale - Save 25% $ 75.99

This product was last offered at the strikethrough price on
06-14-2026

$ 56.99 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 75.99

This product was last offered at the strikethrough price on
06-14-2026

$ 56.99 USD
Free Shipping on orders $49 and up

Upgraded or replacement silicone heater hose for our N54 expansion tank relocation kits.

60" silicone performance coolant hose featuring a molded 90-degree bend for installs with space constraints.

Features and benefits:

Constructed of 4-Ply reinforced silicone for improved durability over the failure-prone rubber hoses.
Reduced thermal conductivity
Improved resistance to ozone and UV degradation for improved performance and durability.
Turner branded

Show More Show Less
Turner Expansion Tank Wire Harness - E9X/ E8X N54
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:568366
Part#: 021942TMS05
In Stock
Sale - Save 25% $ 26.99

This product was last offered at the strikethrough price on
06-14-2026

$ 20.24 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 26.99

This product was last offered at the strikethrough price on
06-14-2026

$ 20.24 USD
Free Shipping on orders $49 and up
The E9X/ E8X N54 Expansion Tank Wire harness is perfect for those running a relocated coolant reservoir tank. This harness plugs right into the factory connector allowing you to extend the position of the sensor without the need to splice any wires.
Show More Show Less

Mechanical Thermostat Conversion - M52TU/M54
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:20617634
Part#: 008785LA01T
Ships on Jan 11, 2027
Sale - Save 17% $ 376.99

This product was last offered at the strikethrough price on
06-14-2026

Starting at $ 312.37 USD
Free Shipping on orders $49 and up
Sale - Save 17%
$ 376.99

This product was last offered at the strikethrough price on
06-14-2026

Starting at $ 312.37 USD
Free Shipping on orders $49 and up

Replace the Achilles heel of your factory cooling system with a stout and reliable mechanical thermostat setup.

The factory E46 thermostat housing is a combined unit featuring a plastic housing and a built in thermostat that you cannot replace separately. These plastic all-in-one units are commonly know to crack or fail causing a headache, a trip on the tow truck and possible damage to your engine.

Taking cues from the reliable M50 thermostat setup we designed a an assembly that not only converts your plastic housing into a billet aluminum unit but also swaps out the integrated thermostat for a separate replaceable thermostat. The ability to swap out thermostats separately from the whole housing opens up doors to changing thermostats to different temperature ratings based on your application while also providing lower maintenance costs. No longer do you have to replace the whole housing but just the thermostat itself.

The billet housing is designed to be utilized with E46 M3 upper and lower radiator hoses and also features -16 ORB connections for custom radiator hoses. A major upgrade from the factory and aftermarket plastic units. Our thermostat housing kit can be used by the savvy daily driver or the track hero who wants to ensure the durability of their cooling system.

Key benefits:

Uses M50/S50 mechanical thermostat for increased reliability
Option to use aftermarket colder thermostats if desired
Thermostat can be replaced separately for lower maintenance cost
Barbed hose connections for use with E46 M3 hoses or built in -16 ORB connections for custom radiator hoses
Design:

Machined out of a single piece of billet 6061 aluminum, this thermostat housing will withstand higher prolonged temperatures and abuse for performance applications
Black anodized with engraved Turner logo on the front to match the Turner Motorsports Power Steering Reservoir
Viton gasket for superior sealing performance
For use with E46 M3 radiator hoses 11537830715 and 11537830716
Kit contents:

6061 Billet Aluminum Thermostat Housing
Mechanical Thermostat
Thermostat Housing Gasket
Thermostat Harness
Optional Silicone or Rubber E46 M3 coolant hoses
Product Development:

Our Billet Thermostat Housing upgrade was designed, engineered, tested and quality inspected by our Research and Development team at Turner. Nothing but the highest level of precision and quality through leading-edge product development technology including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modeling, rapid prototyping utilizing our in-house 3D printer and rigorous long term product testing.

Show More Show Less

Carbon Fiber Radiator Cover - G80, G82, G83, G87
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:6181683
Part#: 003115LA01
Ships on Feb 12, 2027
Sale - Save 3% $ 547.99

This product was last offered at the strikethrough price on
06-14-2026

$ 531.55 USD
Free Shipping on orders $49 and up
Sale - Save 3%
$ 547.99

This product was last offered at the strikethrough price on
06-14-2026

$ 531.55 USD
Free Shipping on orders $49 and up

Replace your factory, stamped aluminum radiator slam panel with a more lively gloss carbon fiber version for a look that sets your car apart from the rest.

Pop the hood! Say so long to the plain satin black radiator cover, our Turner carbon fiber engine cover looks so good along with the S58 and can transform the appearance of your engine bay in just minutes. One of the first things you do with a new car is take care of all the simple modifications to get the best out car without taking it apart. Remove your factory radiator slam panel and replace it with your new carbon fiber cover to check one modification off the list! Be the one who stands out from the other S58-equipped cars with their hoods open.

Our Turner Carbon radiator cover starts with a mold of the original component to get the best factory-form fitment possible. The cover is made from hand-laid carbon fiber material with pre-impregnated carbon fiber cloth and epoxy resin and finished in a beautiful gloss clear coat for UV-protection and extra durability. Be sure to check out the other incredible carbon fiber pieces Turner offers to enhance your G chassis!

Show More Show Less
Turner Motorsport - Corporate Logo
T#:57543703
Part#: 059198LA03KT
In Stock
New Item
$ 62.99 USD
Free Shipping on orders $49 and up

Upgrade your cooling system setup with our Heavy Duty Radiator Mounting Brackets, engineered to deliver maximum structural support and a refined engine-bay aesthetic. After decades of heat cycles and hard driving, your E30's factory plastic mounts inevitably become brittle, faded, and prone to cracking, risking damage to your radiator. Our radiator mount upgrade completely replaces those tired OEM units with a high-strength alternative built to handle the rigors of spirited driving, track days, and engine swaps. Whether you are performing a full cooling system refresh or executing an M5X swap that utilizes an E36-style radiator, these brackets provide the ideal balance of precision fitment and rugged dependability.

Crafted with a premium brushed stainless steel finish, this kit does more than secure your radiator; it radically improves the visual appeal under the hood by swapping out cheap, weathered plastic for durable steel hardware. Designed as a true direct bolt-on solution, the brackets align seamlessly with factory mounting locations, eliminating the need for frustrating custom fabrication, cutting, or drilling. They clamp down firmly to eliminate unwanted radiator movement, ensuring your cooling stack remains locked in place under heavy vibration.

Show More Show Less

OEM Style Hose Clamps
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:338927
Part#: HOSE-CLAMPS
In Stock
Sale - Save 3% $ 3.99

This product was last offered at the strikethrough price on
06-13-2026

Starting at $ 3.87 USD
Free Shipping on orders $49 and up
Sale - Save 3%
$ 3.99

This product was last offered at the strikethrough price on
06-13-2026

Starting at $ 3.87 USD
Free Shipping on orders $49 and up
Hose clamps for radiator hoses, coolant hoses, vacuum hoses, or intake hoses. These hose clamps are the same style as your OEM hoses with a smooth inside band to prevent cutting into the hose material.
Show More Show Less
Canton Racing - Corporate Logo
T#:19428667
Part#: 80-272
Ships on Dec 4, 2026
17% off MSRP $ 226.99

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

$ 189.00 USD
Free Shipping on orders $49 and up
17% off MSRP
$ 226.99

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

$ 189.00 USD
Free Shipping on orders $49 and up
Upgrade your Gen1 Mini Cooper & Cooper S with this high-quality coolant expansion/fill tank from Canton Racing. With a billet radiator-style neck designed to accept the Canton Racing part #81-030 pressure cap or any 30 psi radiator-style cap, this aluminum tank offers superior performance and style.
  • Features a billet radiator-style neck for enhanced durability
  • Resolves expansion tank issues with a solid, built-in mount
  • Eliminates worries about separating and leaking plastic tanks
  • Perfectly complements Canton Racing 77-272 MINI power steering tank
Ensure reliability and improve the aesthetic appeal of your engine bay with this Canton Racing Aluminum coolant expansion/fill tank for your Gen1 Mini Cooper & Cooper S.
Show More Show Less

Canton Racing - Corporate Logo
T#:19428666
Part#: 81-030
In Stock
17% off MSRP $ 45.99

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

$ 38.00 USD
Free Shipping on orders $49 and up
17% off MSRP
$ 45.99

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

$ 38.00 USD
Free Shipping on orders $49 and up
Ensure optimal performance of your Mini's cooling system with the Expansion Tank Pressure Cap - 30 Lbs W10 W11 1.6L Engine. Designed for use with Canton Racing aluminum expansion tanks or similar applications, this 30psi radiator style cap provides reliable pressure control. Keep your engine running smoothly with this essential component.
Show More Show Less

AFE - Corporate Logo
T#:35121163
Part#: 46-53241
Back Ordered
Sale - Save 5% $ 236.00

This product was last offered at the strikethrough price on
10-19-2026

$ 224.20 USD
Free Shipping on orders $49 and up
Sale - Save 5%
$ 236.00

This product was last offered at the strikethrough price on
10-19-2026

$ 224.20 USD
Free Shipping on orders $49 and up
The aFe POWER BladeRunner OER Series Radiators are engineered as the perfect replacement for worn or damaged stock radiators. Over time, stock radiators lose efficiency due to corrosion and road debris, with aging connectors and joints becoming prone to leaks that can lead to overheating and costly engine damage. Our OER radiators feature an all-aluminum core with molded plastic end tanks, incorporating all necessary mounting points and fittings for quick, easy installation. Keep your engine cool and performing at its best with aFe POWER BladeRunner OER Series Radiators.
Show More Show Less
Enthusiast Bundles - Corporate Logo
T#:37419798
Part#: 008363LA02EB1KT
Ships on Jan 11, 2027
Sale - Save 24% $ 1,055.95

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

$ 799.04 USD
Free Shipping on orders $49 and up
Sale - Save 24%
$ 1,055.95

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

$ 799.04 USD
Free Shipping on orders $49 and up

Take your BMW’s cooling system to the next level with this Turner Motorsport Cooling Upgrade Kit. Featuring a Heavy-Duty Aluminum Expansion Tank and a Mechanical Thermostat Conversion Kit, this combo is engineered to deliver ultimate reliability and superior performance for M52TU/M54 engines. Say goodbye to the cooling system failures common in stock setups—Turner Motorsport has you covered.

Turner Motorsport M52TU/M54 Heavy-Duty Expansion Tank Kit

The Turner Motorsport Aluminum Expansion Tank is a premium upgrade designed to replace the fragile factory plastic tank, which is known to crack, leak, or even explode. Crafted for durability, this tank’s all-aluminum construction with wrinkle black powder coating ensures this is the last expansion tank you’ll ever need.

Why Upgrade? The factory plastic tanks on BMW M52TU/M54 engines are notorious for failure under heat and pressure. Avoid the risk of being stranded on the side of the road with a mess of coolant—Turner Motorsport’s aluminum expansion tank is built to withstand years of demanding use and intense heat cycles.

Key Features and Benefits:

Complete Kit: Includes Turner Aluminum Expansion Tank, coolant level sensor, expansion tank cap, and flared coolant pressure release line. OEM Fit & Capacity: Direct fit with no modifications, maintains stock coolant capacity and expansion volume. Baffled Design: Prevents air pockets during aggressive driving and ensures accurate coolant level readings. Premium Construction: TIG-welded 5052 aluminum with machined fittings for factory hose compatibility. Turner Motorsport M52TU/M54 Mechanical Thermostat Conversion Kit

Replace your problematic factory plastic thermostat housing with Turner Motorsport’s high-quality billet aluminum Thermostat Conversion Kit. This upgrade not only provides increased reliability but also allows for thermostat swaps to suit specific temperature requirements, making it ideal for daily drivers and track cars alike.

Why Make the Switch? The factory plastic thermostat housing with its built-in thermostat is prone to cracking and requires the whole unit to be replaced during maintenance. Turner’s conversion kit changes the game by providing a durable billet housing with a replaceable thermostat for flexibility and lower maintenance costs.

Key Features and Benefits:

Increased Reliability: Uses an M50/S50 mechanical thermostat, including an 80°C thermostat for enhanced cooling control. Customizable: Includes barbed hose connections for standard E46 M3 hoses and -16 ORB connections for custom hoses. Engineered to Last: CNC-machined from billet 6061 aluminum and black anodized for corrosion resistance. Enhanced Sealing: Features a Viton gasket for superior durability and sealing performance. Kit Includes:

6061 Billet Aluminum Thermostat Housing 80°C Mechanical Thermostat Thermostat Housing Gasket Thermostat Harness ECS Silicone E46 M3 Cooling Hoses Turner Motorsport Precision Engineering & Product Development

Every component in this cooling upgrade kit has been rigorously designed, engineered, and tested by Turner Motorsport’s Research and Development team. Using state-of-the-art technology such as FARO laser scanning, SolidWorks 3D modeling, and in-house rapid prototyping, Turner ensures that these products meet the highest standards of quality, precision, and durability.

Upgrade your BMW with confidence—Turner Motorsport is your partner in performance and reliability.

Show More Show Less
M7 Speed - Corporate Logo
T#:386325
Part#: 53-3M7104
In Stock
Sale - Save 6% $ 49.99

This product was last offered at the strikethrough price on
08-31-2026

$ 47.03 USD
Free Shipping on orders $49 and up
Sale - Save 6%
$ 49.99

This product was last offered at the strikethrough price on
08-31-2026

$ 47.03 USD
Free Shipping on orders $49 and up

Have you ever noticed how crisp and responsive your MINI was after that initial warm-up period, and wanted to keep that feeling for the rest of the day? This 180° F Thermostat is the solution. Not only does the engine maintain its fresh-start power, but also the under-hood temperatures are greatly diminished (see comparison table below). Now when your car sits after a hard run it won't cook and dry out everything under the hood as bad as it did in the stock configuration. This is great for the MINI owner that lives in a hot climate, or those that push their cars hard at the track or local twisty road.

Please Note: This thermostat does not include a replacement gasket. Reuse the gasket from the OEM thermostat.

Cold Weather Alert: If you encounter weather below 50º F or 10º C, please be aware that the ECU could throw a “check engine” light. This is no cause for alarm as the sensors are registering an anomaly and the thermostat is not harming the engine. The “check engine” light can be reset with a diagnostic tool or left as is. Please call if you have questions.
 

Test ParametersThermostat Temp OriginalThermostat Temp M7180Delta (°F)

Intercooler Manifold9870-28

Upper Coolant Hose190179-11

Supercharger at Pulley Shaft Housing178160-18

Head at Thermostat174153-21

Idle w A/C on214185-29

Coolant Temp During Hard Driving212180-32

Show More Show Less


Canton Racing - Corporate Logo
T#:19428688
Part#: 80-272BLK
Ships on Nov 13, 2026
17% off MSRP $ 272.99

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

$ 227.00 USD
Free Shipping on orders $49 and up
17% off MSRP
$ 272.99

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

$ 227.00 USD
Free Shipping on orders $49 and up

Upgrade your Gen1 Mini Cooper or Cooper S with the coolant expansion/fill tank featuring a billet radiator-style neck. This tank accepts the Canton Racing part #81-030 pressure cap or any 30 psi radiator-style cap. The Canton Racing Aluminum tank with Powdercoated Wrinkle Black finish not only enhances the engine bay aesthetics but also resolves expansion tank issues with its solid build and built-in mount. Say goodbye to concerns about separating and leaking plastic expansion tanks. Pair it with the Canton Racing 77-272 MINI power steering tank for a perfect combination.

  • Features a billet radiator-style neck
  • Accepts Canton Racing pressure cap or any 30 psi radiator-style cap
  • Enhances engine bay aesthetics with Powdercoated Wrinkle Black finish
  • Resolves expansion tank issues with solid build and built-in mount
  • Eliminates worries about separating and leaking plastic tanks
  • Perfect complement to Canton Racing 77-272 MINI power steering tank
Show More Show Less
Canton Racing - Corporate Logo
T#:31423679
Part#: 80-272BLKKT1KT
Ships on Nov 13, 2026
$ 493.00 USD
Free Shipping on orders $49 and up

MINI R50 to R53 Expansion Tank / Power Steering Tank - Wrinkle Black Aluminum is a high-quality solution designed to address both coolant expansion and power steering needs in one kit. This kit includes a billet-style expansion tank with a radiator neck that accepts the Canton Racing part #81-030 pressure cap or any 30 psi radiator cap, ensuring a secure and leak-proof seal.

Key benefits of the MINI R50 to R53 Expansion Tank / Power Steering Tank - Wrinkle Black Aluminum include:

  • Dual Functionality: Combines both expansion tank and power steering tank into a single, convenient kit.
  • Durable Construction: Made from aluminum with a wrinkle black finish, providing long-lasting performance and a sleek appearance.
  • Enhanced Sealing: Features a billet radiator-style neck that fits standard 30 psi radiator caps, preventing leaks and ensuring reliable operation.
  • Reliable Design: Eliminates the issues associated with plastic tanks, such as separation and leakage.
  • Complete Kit: Includes a black expansion tank, black power steering tank, and a Stant cap for easy installation.
Show More Show Less
Canton Racing - Corporate Logo
T#:31390597
Part#: 80-272BLKKT
Ships on Nov 13, 2026
$ 265.00 USD
Free Shipping on orders $49 and up

MINI R50 to R53 Expansion Tank Aluminum Wrinkle Black & Cap - Kit offers the premium quality of Canton Racing for MINI enthusiasts. This high-grade aluminum expansion tank features a sleek Wrinkle Black powder-coated finish, designed to replace the original plastic tank with ease.

  • Premium Quality: Made from durable aluminum with a Wrinkle Black powder-coated finish for enhanced aesthetics and longevity.
  • Direct Replacement: Utilizes the original mountings for a hassle-free installation, ensuring a perfect fit.
  • Enhanced Functionality: Upgrades from the standard plastic tank to improve both appearance and performance over time.
  • Kit Includes:
    • Canton Racing Coolant Tank in Wrinkle Black Powdercoating
    • Canton Racing Stant Tank Cap
Show More Show Less