BMW Cooling System Parts & Accessories for BMW 3 Series G20 (2019+)

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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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Burger Motorsports - Corporate Logo
T#:5095728
Part#: GCHASB58HEATEXCH
Ships on Jul 14, 2025
$ 480.00 USD
$ 480.00 USD
This heat exchanger upgrade is a high-quality replacement that dramatically lowers engine oil and water temperatures by providing a 50% larger cooling surface than OEM. The benefits are most noticed during back to back runs at higher boost levels where the factory cooling capacity can be overwhelmed resulting in ignition timing pull and reduced turbo efficiency. Direct bolt-in installation.
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Mishimoto - Corporate Logo
T#:378412
Part#: MMFAN12BL
In Stock at Vendor
9% off MSRP $ 118.00
$ 106.99 USD
Free Shipping
9% off MSRP $ 118.00
$ 106.99 USD
Free Shipping
WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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Mishimoto - Corporate Logo
T#:378434
Part#: MMFAN10
In Stock at Vendor
9% off MSRP $ 98.00
$ 88.99 USD
Free Shipping
9% off MSRP $ 98.00
$ 88.99 USD
Free Shipping
WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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ATD Tools - Corporate Logo
T#:3629267
Part#: ATD3300
Ships in 6 Business Days
$ 262.99 USD
Free Shipping
$ 262.99 USD
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Adapters for most European and domestic vehicles

VTT Billet/Silicone Cylinder Head Cooling Hose - B58TU
For vehicles with a production date from 01/18
Vargas Turbo Technologies - Corporate Logo
T#:29334026
Part#: VTT-B58TU-UCH
Ships in 10 Business Days
Starting at $ 209.99 USD
Free Shipping on orders $49 and up
Starting at $ 209.99 USD
Free Shipping on orders $49 and up

Positioned directly in the charge pipe's path, the stock B58TU upper cylinder head cooling hose, primarily made of plastic, is prone to damage. A dislodged charge pipe can easily take out this cooling hose, leading to severe engine damage through rapid coolant loss and overheating.

To address this vulnerability, VTT has engineered a robust solution. By replacing the OEM rubber hose with a durable 7-ply silicone variant, they offer superior resilience and longevity. Furthermore, they've upgraded the factory plastic flanges to 6061-T6 billet aluminum with black anodizing, enhancing corrosion resistance.

This upgraded hose is the ultimate solution, providing protection against dislodged charge pipes and the heat generated from spirited driving or track use.

Key Features:

Direct factory replacement for easy installation 6061-T6 billet aluminum with black anodizing for improved corrosion resistance Durable 7-ply silicone available in three colors Upgrade your BMW B58TU engine with this enhanced cooling hose from Vargas Turbo Technologies for superior performance and reliability.

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Oil Cooler Gasket Set
2X Entries For Our Spin To Win Sweepstakes! We Price Match - Give Us A Call or Chat!
Elring - Corporate Logo
T#:15048412
Part#: 11428583897
In Stock at Vendor
$ 17.29 USD
Free Shipping on orders $49 and up
Avoid leaks and other issues by replacing your oil cooler gaskets upon taking out or replacing the unit itself!

URO - Corporate Logo
T#:42436716
Part#: 11428583901
Ships in 1 Business Day
New Item
Sale - Save 7% $ 49.99
$ 46.34 USD
Sale - Save 7% $ 49.99
$ 46.34 USD
Engine oil coolers are critical for keeping oil temperatures in check, preventing premature breakdown and maintaining proper lubrication. When oil gets too hot, it loses viscosity and can't effectively protect vital engine components like bearings—which can lead to serious, even catastrophic, failures. If your oil cooler is damaged or has failed, replacing it is essential to protect your engine and keep everything running smoothly.
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Nissens - Corporate Logo
T#:27905106
Part#: 11428583901
In Stock at Vendor
$ 81.99 USD
Free Shipping on orders $49 and up
Engine oil coolers help reduce the oil temperature, preventing the oil from breaking down prematurely and losing its lubricating properties. Engine oil coolers play a crucial role in regulating oil temperature, ensuring proper lubrication, and optimizing engine performance and longevity. Engine oil that is too hot drops in viscosity and does not provide adequate lubrication to sensitive engine components such as bearings, which can fail catastrophically if not properly lubricated. If your engine oil cooler has been damaged or has failed we recommend replacing it to ensure no damage occurs to your engine.
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Genuine BMW - Corporate Logo
T#:545300
Part#: 11538630023
Ships Jul 3, 2025
Sale - Save 3% $ 149.99
$ 145.31 USD
Free Shipping
Sale - Save 3% $ 149.99
$ 145.31 USD
Free Shipping
Coolant pipe that runs from the thermostat next to the engine block. Make sure your cooling system is working properly and leak free. When your in the tight spaces doing a service it makes sense to change all associated parts.
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Genuine BMW Cooling Pump with Support - 11518650986
For vehicles without Energy Recuperation System (O1CE) produced before 07/20
Genuine BMW - Corporate Logo
T#:606623
Part#: 11518650986
Ships Jun 30, 2025
Sale - Save 3% $ 263.99
$ 255.81 USD
Free Shipping on orders $49 and up
Sale - Save 3% $ 263.99
$ 255.81 USD
Free Shipping on orders $49 and up

This water pump is provided with all associated installation components, including:

11518482251 - Water Pump 11518650986 - Water Pump Bracket to Engine Block 11518482263 - Water Pump profile Gasket 11518482264 - Profile Gasket for Bracket to Engine Block 11518482258 - Coolant Pipe to Water Pump 11518482260 - O-ring Seal for Coolant Pipe

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Genuine BMW - Corporate Logo
T#:613991
Part#: 17428666819
Ships Jun 30, 2025
Sale - Save 5% $ 1,271.99
$ 1,207.73 USD
Sale - Save 5% $ 1,271.99
$ 1,207.73 USD

Enhance Engine Cooling with Genuine BMW Fan Housing with Fan (Part Number: 17428666819)

Maintain your vehicle's cooling system efficiency with the Genuine BMW Fan Housing with Fan (Part Number: 17428666819). This authentic BMW replacement component adheres to the manufacturer's stringent quality standards, ensuring precision engineering and durability.

Designed to seamlessly fit BMW vehicles, this fan housing with a fan assembly guarantees optimal cooling performance, essential for enhancing your vehicle's longevity and overall performance. Rely on Genuine BMW parts for their perfect integration and dependable functionality.

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Genuine BMW - Corporate Logo
T#:613575
Part#: 64116834917
Ships Jun 30, 2025
Sale - Save 3% $ 257.99
$ 249.54 USD
Free Shipping
Sale - Save 3% $ 257.99
$ 249.54 USD
Free Shipping
eplace your faulty or failing electric water pump with this Genuine BMW pump for guaranteed reliability. This water pump feeds coolant to the turbo, keeping temperatures optimal for performance and smooth operation.
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Cap
D=6
Genuine BMW - Corporate Logo
T#:191368
Part#: 17128515062
Ships Jun 30, 2025
Sale - Save 5% $ 10.99
$ 10.43 USD
Free Shipping on orders $49 and up
Sale - Save 5% $ 10.99
$ 10.43 USD
Free Shipping on orders $49 and up


Genuine BMW Cap -
This item fits the following BMW Chassis:
F15,F25 X3

Fits BMW Engines including:
N57N

Genuine BMW - Corporate Logo
T#:222843
Part#: 11428583897
Ships Jun 30, 2025
Sale - Save 3% $ 48.99
$ 47.52 USD
Free Shipping on orders $49 and up
Sale - Save 3% $ 48.99
$ 47.52 USD
Free Shipping on orders $49 and up

Situated on the engine's oil filter housing, this set of gaskets plays a crucial role in sealing the housing to the engine block. Over time, exposure to heat and oil can cause these rubber gaskets to become brittle, compromising their ability to seal the mating surfaces effectively.

Given that oil flows from the block to the filter housing, any leaks from these seals can lead to significant issues. Fortunately, BMW offers a comprehensive set of these gaskets, providing a solution to all oil leaks and restoring your vehicle to optimal performance.

How can you identify if your oil cooler gaskets are leaking?

Oil drips beneath the car when it's parked. Visible oil accumulation on the intake/heat exchanger side of the engine block. Frequent low oil level warnings during driving.

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Genuine BMW - Corporate Logo
T#:28891
Part#: 07129905494
In Stock
$ 6.99 USD
Free Shipping on orders $49 and up
Genuine water pump hardware. M6x16-8.8. 6 of these screws are found in association with the water pump

Genuine BMW - Corporate Logo
T#:618224
Part#: 17128654854
Ships Jun 30, 2025
Sale - Save 3% $ 117.99
$ 114.43 USD
Free Shipping on orders $49 and up
Sale - Save 3% $ 117.99
$ 114.43 USD
Free Shipping on orders $49 and up

Genuine BMW - Corporate Logo
T#:618260
Part#: 17128654821
Ships Jul 2, 2025
Sale - Save 3% $ 78.99
$ 76.29 USD
Free Shipping on orders $49 and up
Sale - Save 3% $ 78.99
$ 76.29 USD
Free Shipping on orders $49 and up

This item fits the following BMWs:

M340i G20 M340iX G20

Victor Reinz - Corporate Logo
T#:580584
Part#: C32348
Ships Jul 7, 2025
$ 2.99 USD
Free Shipping on orders $49 and up

Silver Auxiliary Coolant Reservoir Cap
2X Entries For Our Spin To Win Sweepstakes!
Precision Raceworks - Corporate Logo
T#:38128032
Part#: 201-0394-SIL
Ships Jul 10, 2025
New Item
$ 99.99 USD
Free Shipping on orders $49 and up

BMW Silver Auxiliary Coolant Reservoir Cap is the perfect upgrade for BMW owners looking to enhance both the aesthetics and functionality of their engine bay. Unlike generic aftermarket caps that overlook critical pressure regulation, this precision-engineered cap retains the OEM pressure release functionality, ensuring safe and reliable coolant system performance.

Crafted from high-quality billet aluminum, this reservoir cap offers superior durability and resistance to heat and fluids, preventing warping or degradation over time. Unlike adhesive-based cap covers that can loosen or fall off, this cap is a direct replacement for the factory component, providing a secure, high-performance solution.

  • OEM pressure release functionality – Maintains proper system regulation for optimal coolant performance
  • Premium billet aluminum construction – Offers enhanced durability and longevity
  • Direct replacement design – Secure fit without adhesives or modifications
  • Resistant to heat and fluids – Ensures long-lasting reliability in extreme conditions
  • Performance-inspired look – Adds a sleek, high-end appearance to your engine bay
  • Upgraded durability – Prevents cracking, leaks, and premature wear

Upgrade your BMW’s cooling system with the BMW Silver Auxiliary Coolant Reservoir Cap, blending performance, reliability, and premium styling.

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BMW Black Auxiliary Coolant Reservoir Cap
2X Entries For Our Spin To Win Sweepstakes!
Precision Raceworks - Corporate Logo
T#:38128031
Part#: 201-0394-BLK
Ships Jul 10, 2025
New Item
$ 99.99 USD
$ 99.99 USD

BMW Black Auxiliary Coolant Reservoir Cap is the perfect upgrade for BMW owners looking to enhance both the aesthetics and functionality of their engine bay. Unlike generic aftermarket caps that overlook critical pressure regulation, this precision-engineered cap retains the OEM pressure release functionality, ensuring safe and reliable coolant system performance.

Crafted from high-quality billet aluminum, this reservoir cap offers superior durability and resistance to heat and fluids, preventing warping or degradation over time. Unlike adhesive-based cap covers that can loosen or fall off, this cap is a direct replacement for the factory component, providing a secure, high-performance solution.

  • OEM pressure release functionality – Maintains proper system regulation for optimal coolant performance
  • Premium billet aluminum construction – Offers enhanced durability and longevity
  • Direct replacement design – Secure fit without adhesives or modifications
  • Resistant to heat and fluids – Ensures long-lasting reliability in extreme conditions
  • Performance-inspired look – Adds a sleek, high-end appearance to your engine bay
  • Upgraded durability – Prevents cracking, leaks, and premature wear

Upgrade your BMW’s cooling system with the BMW Black Auxiliary Coolant Reservoir Cap, blending performance, reliability, and premium styling.

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BMW Blue Auxiliary Coolant Reservoir Cap
2X Entries For Our Spin To Win Sweepstakes!
Precision Raceworks - Corporate Logo
T#:38128029
Part#: 201-0394-BLU
Ships Jul 10, 2025
New Item
$ 99.99 USD
$ 99.99 USD

BMW Blue Auxiliary Coolant Reservoir Cap is the perfect upgrade for BMW owners looking to enhance both the aesthetics and functionality of their engine bay. Unlike generic aftermarket caps that overlook critical pressure regulation, this precision-engineered cap retains the OEM pressure release functionality, ensuring safe and reliable coolant system performance.

Crafted from high-quality billet aluminum, this reservoir cap offers superior durability and resistance to heat and fluids, preventing warping or degradation over time. Unlike adhesive-based cap covers that can loosen or fall off, this cap is a direct replacement for the factory component, providing a secure, high-performance solution.

  • OEM pressure release functionality – Maintains proper system regulation for optimal coolant performance
  • Premium billet aluminum construction – Offers enhanced durability and longevity
  • Direct replacement design – Secure fit without adhesives or modifications
  • Resistant to heat and fluids – Ensures long-lasting reliability in extreme conditions
  • Performance-inspired look – Adds a sleek, high-end appearance to your engine bay
  • Upgraded durability – Prevents cracking, leaks, and premature wear

Upgrade your BMW’s cooling system with the BMW Blue Auxiliary Coolant Reservoir Cap, blending performance, reliability, and premium styling.

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2 Pin Connector
10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:33412932
Part#: 61132359999
Ships on Aug 11, 2025
Sale - Save 35% $ 9.99
$ 6.49 USD
Free Shipping on orders $49 and up
Sale - Save 35% $ 9.99
$ 6.49 USD
Free Shipping on orders $49 and up

Includes connector housing with terminals and seals. Commonly used for the coolant level sensor.

ECS Tuning replacement harness connectors include all necessary pins and wire seals for a complete harness repair. Whether you have a broken harness connector or need a complete wiring repair, we have the components you need.

Each connector includes an additional terminal in case one becomes lost or damaged during installation.

*OEM cross reference PN# 61132359999 - Commonly used for the coolant level sensor.

Please reference the original part number from the existing connector to confirm fitment, before ordering.

Suggested tools:

Suggested crimping pliers: T#387193
Wire De-pin tools:
12pc De-Pin Tool Set - T#386379
23pc De-Pin Tool Set - T#641943

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CTS - Corporate Logo
T#:20155606
Part#: CTS-HX-0010
Special Order: No Guaranteed ETA
$ 379.99 USD
Free Shipping
$ 379.99 USD
Free Shipping
We are proud to announce our new high-performance Auxiliary Radiator Cooler Upgrade for G-series BMWs and MKV Toyota Supra. Designed specifically for enthusiasts who demand superior cooling performance, this upgrade offers enhanced heat dissipation and improved thermal management for your engine and transmission. Crafted from top-quality materials, the auxiliary radiator cooler is engineered to seamlessly integrate into your existing cooling system, providing optimized cooling efficiency under high-stress conditions. Say goodbye to overheating worries and unleash the full potential of your B58’s performance with our Auxiliary Radiator Cooler Upgrade. **PLEASE NOTE THESE ARE SOLD INDIVIDUALLY. ALL CARS REQUIRE 2 AUXILIARY RADIATORS PLEASE ENSURE TO ADD 2 TO YOUR CART FOR A FULL SET. Features: Elevate cooling performance with our Auxiliary Radiator Cooler Upgrade Features a 2-row, 42mm ultra-high-performance core Precision CNC machined mounting brackets and OEM-style Quick Connect fittings Constructed with 100% aluminum, TIG-welded for durability and heat dissipation High-performance black finish Fits seamlessly on both left and right sides of the vehicle Designed as a drop-in fit, requiring no modifications during installation Fitment: 2020 – present A90/A91 Toyota Supra 2018 – present BMW G2X/G42 M340i M440i M240i 2018 – present BMW z4 M40i
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CTS Turbo High Performance Heat Exchanger
5X Entries For Our Spin To Win Sweepstakes!
CTS - Corporate Logo
T#:18932328
Part#: CTS-A90-HX
Special Order: No Guaranteed ETA
$ 499.99 USD
Free Shipping
$ 499.99 USD
Free Shipping
The factory front-mounted heat exchanger is small and not efficient enough to provide enough cooling to tuned B48/B58 engines. CTS designed this heat exchange to overcome that problem. The double-pass core was made to be higher flowing and larger than the factory but still drop into the stock location. CNC machined mounting points and hose connections allow for a seamless install without any need to cut or trim any factory parts. Keep your B48/B58 running cool and reliably with the CTS Turbo Front Mount Heat Exchanger. Features: CNC machined mounting points and hose connection for factory fitment Drop-in design Smooth bends on the coolant connections High-efficiency double-pass aluminum core Hand-welded and pressure tested Lowers intake air temperature Installation hardware included Fully compatible with factory rock guard, simply transfer the factory parts over
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