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

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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Titanium Coolant Bleeder Screw Upgrade

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:38621407

Part#: BMS-TCBS

Back Ordered

$ 25.00 USD

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$ 25.00 USD

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Replace your fragile OEM plastic coolant bleeder screw, which is prone to cracking and failure, with a premium titanium upgrade built for strength and style under the hood. Factory plastic components weaken over time due to constant heat cycles, leading to brittleness and potential failure. Our titanium replacement delivers superior durability, being twice as strong as aluminum yet 45% lighter than steel, ensuring unmatched resilience and long-term reliability for your coolant system. More than an upgrade, it’s a must-have for engine longevity. CNC-machined from solid titanium, each screw features a laser-etched Burger Motorsports logo and is hand-burned to create unique color patterns—no two are alike. A heavy-duty replacement O-ring is included for a perfect fit.

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Junction Heat Hose - 11538606278

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:36913362

Part#: 11538606278

In Stock

Sale - Save 21% $ 54.99

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

$ 43.24 USD

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Qty

Sale - Save 21%

$ 54.99

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

$ 43.24 USD

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This junction heat hose, made from rubber, is prone to cracking, dry rot, and brittleness over time, often leading to coolant leaks at the front of the engine. Such leaks pose a significant risk to your engine’s health, as rapid coolant loss can cause overheating and severe damage.

Replace your worn or leaking heat hose with this high-quality OE replacement from Bremmen Parts. Engineered for a precise fit and long-lasting performance, this hose ensures a reliable repair and helps protect your engine from potential overheating.

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Electronic Thermostat And Coolant Distribution Module

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:50311455

Part#: 11538843406

In Stock

Sale - Save 10% $ 397.99

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

$ 358.01 USD

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Sale - Save 10%

$ 397.99

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

$ 358.01 USD

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Water/Coolant Pump With Support

For models with the earlier B48D, B46D, or B46X engines and without the Energy Recovery...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:49648357

Part#: 11518650988

In Stock

Sale - Save 17% $ 234.99

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

$ 195.99 USD

Limited Qty Sale

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Sale - Save 17%

$ 234.99

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

$ 195.99 USD

Limited Qty Sale

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BMS Heat Exchanger Upgrade - G-Chassis B58

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:5095728

Part#: GCHASB58HEATEXCH

Ships on Jul 27, 2026

$ 480.00 USD

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$ 480.00 USD

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

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Titanium Coolant Bleeder Screw Upgrade

Junction Heat Hose - 11538606278

Electronic Thermostat And Coolant Distribution Module

Water/Coolant Pump With Support

BMS Heat Exchanger Upgrade - G-Chassis B58

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