Bavarian Autosport BMW Cooling System Parts & Accessories for BMW 2 Series F23 (2015+)

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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 Assembly
Thermostat Assembly
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Bavarian Autosport - Corporate Logo
T#:15511823
Part#: 11537598865
In Stock
Sale - Save 10% $ 77.99

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

$ 70.19 USD
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Sale - Save 10%
$ 77.99

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

$ 70.19 USD
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Replace your thermostat housing at any signs of leaks or premature failure. Includes housing. Does not include a housing gasket.
BMW N47 N55 Expansion Tank
BMW N47 N55 Expansion Tank
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Bavarian Autosport - Corporate Logo
T#:17704781
Part#: 17137642160
In Stock
Sale - Save 20% $ 98.99

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

$ 79.19 USD
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Sale - Save 20%
$ 98.99

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

$ 79.19 USD
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BMW N47 N55 Expansion Tank from Turner Motorsport is a high-quality replacement designed to address issues with cracked or damaged coolant expansion tanks. Engineered for durability and performance, this expansion tank ensures reliable cooling system function.

  • Durable Construction: Built to withstand high temperatures and pressure, ensuring long-term reliability.
  • Direct Replacement: Engineered as a precise fit for BMW N47 and N55 engines, making installation straightforward and hassle-free.
  • Enhanced Cooling Efficiency: Maintains optimal coolant levels and pressure for effective engine cooling.
  • High-Quality Materials: Manufactured from premium materials to resist cracking and leaks.
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BMW N20 2.0L Turbo Supply Cooling Line
BMW N20 2.0L Turbo Supply Cooling Line
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Bavarian Autosport - Corporate Logo
T#:17704760
Part#: 11538663516
In Stock
Sale - Save 20% $ 46.99

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

$ 37.59 USD
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Sale - Save 20%
$ 46.99

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

$ 37.59 USD
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BMW N20 2.0L Turbo Supply Cooling Line is a crucial component designed to ensure optimal cooling for the turbocharger in BMW vehicles equipped with the N20 2.0L turbo engine. This high-quality cooling line maintains proper coolant flow to the turbo, preventing overheating and ensuring reliable performance.

  • Optimal Cooling: Effectively cools the turbocharger to prevent overheating and maintain performance.
  • Durable Construction: Built with high-quality materials for long-lasting reliability.
  • Precise Fitment: Designed specifically for BMW N20 2.0L turbo engines.
  • Enhanced Performance: Helps in sustaining the turbo's efficiency and longevity.
  • Easy Installation: Direct replacement part for a hassle-free installation.

Maintain the efficiency and longevity of your BMW’s turbocharger with this essential cooling line, designed for superior performance and durability.

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BMW N20 Turbo Cooling Return Line
BMW N20 Turbo Cooling Return Line
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bavarian Autosport - Corporate Logo
T#:17704762
Part#: 11538663517
In Stock
$ 68.99

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

$ 50.99 USD
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$ 68.99

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

$ 50.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
Add to Wish List

BMW N20 Turbo Cooling Return Line

The BMW N20 Turbo Cooling Return Line is an essential component designed to optimize the performance and longevity of your turbocharger. Turner Motorsport offers this high-quality coolant return line, ensuring efficient cooling and preventing overheating of the turbo system. Engineered for a precise fit, this cooling return line integrates seamlessly with your BMW N20 engine, providing reliable and long-lasting performance.

Benefits:

  • Enhances cooling efficiency to prevent turbocharger overheating
  • Constructed from durable materials for extended reliability
  • Precisely engineered for a perfect fit on BMW N20 engines
  • Easy to install with minimal modifications required
  • Helps maintain consistent turbocharger performance by managing coolant flow effectively
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