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BMW Cooling System Parts & Accessories for BMW A90 MKV Supra B58 3.0L

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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OEM Style Hose Clamps

10X Entries Into Our F80 M3 Sweepstakes

T#:338927

Part#: HOSE-CLAMPS

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Sale - Save 3% $ 3.99

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

Starting at $ 3.87 USD

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Sale - Save 3%

$ 3.99

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

Starting at $ 3.87 USD

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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.

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Junction Heat Hose - 11538606278

10X Entries Into Our F80 M3 Sweepstakes

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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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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CSF High Performance Front Mount Heat Exchanger w/ Rock Guard - A90/9...

2X Entries Into Our F80 M3 Sweepstakes

T#:599333

Part#: 8154

In Stock

Sale - Save 10% $ 699.00

This product was last offered at the strikethrough price on
10-04-2026

$ 629.10 USD

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$ 699.00

This product was last offered at the strikethrough price on
10-04-2026

$ 629.10 USD

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CSF is one of the premier cooling product specialists available on the market and has once again shown this with their most recent heat exchanger for the A90 Supra and G-Chassis BMWs. Now including a 2-row 42mm dual-core with B-tube tech and ultra-efficient fins that are a multi-louvered design for maximum surface area coverage. This fin and internal coolant design allows the coolant to pass through the radiator core twice for the maximum amount of cooling possible. Also included is a removable aluminum rock guard to protect against debris. Features: Significantly Reduces Intake Air Temperature (IAT) for Maximum Performance (with Faster Heat Soak Recovery) Improves Air Flow to the Rest of the Cooling System for Both Lower Engine Water and Engine Oil Temperatures 2-Row, 42mm Ultra High Performance Core 6.5mm Tall Multi-Louvered Fin with CSF’s Exclusive B-Tube Technology CNC Machined Mounting Brackets and OEM Style “Quick Connect” Inlet/Outlet 100% All Aluminum TIG-Welded Construction Includes Rock Guard & Transmission Oil Cooler Mounting Kit (Industry Exclusive) “Drop-in” Fit 2-Year Limited Warranty 1-Hour “Mirror Finish” Hand Polish Tested and Proven by CSF’s Global Network of R&D Partners, Including Leading Time Attack Teams, Tuners, and Turbo Kit Manufacturers OEM#: 16400-WAA03 & 17118666811 Fits the following vehicles: 2020+ Toyota Supra (A90/A91) 2018+ BMW Models G29 Z4 20i, 30i & M40i G20 3-Series (320i, 330i, 330iX, M340i, M340iX) G21 3-Series Touring (330i, 330iX, M340iX)

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CSF High-Performance Auxiliary Radiator - A90/G20/G29

2X Entries Into Our F80 M3 Sweepstakes

T#:5802174

Part#: 8179

Ships in 3 Business Days

Sale - Save 10% $ 349.00

This product was last offered at the strikethrough price on
10-04-2026

$ 314.10 USD

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Sale - Save 10%

$ 349.00

This product was last offered at the strikethrough price on
10-04-2026

$ 314.10 USD

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CSF is one of the premier cooling product specialists available on the market thanks to designs such as their High Performance Aluminum Radiators. Using that knowledge, they have developed this set of high-performance radiators that far surpass the abilities of the stock units. These radiators feature 2-row, 42mm High performance cores with 6.5mm tall multi-louvered fins. The units have also been machined with OE quick connect inlets and outlets. Composed of 100% aluminum which also features an aluminum rock guard and finished in thermal black protective coating. Designed for an OEM fitment with no further modification required. Features: Fits Both Left & Right Side of Vehicle 2-Year Limited Warranty Tested and Proven by CSF’s Global Network of R&D Partners, Including Leading Time Attack Teams, Tuners, and Turbo Kit Manufacturers

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CSF - A9X Supra & BMW G-Series High-Performance Radiator

2X Entries Into Our F80 M3 Sweepstakes

T#:33879999

Part#: 7226

Ships in 3 Business Days

Sale - Save 10% $ 789.00

This product was last offered at the strikethrough price on
10-04-2026

$ 710.10 USD

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Sale - Save 10%

$ 789.00

This product was last offered at the strikethrough price on
10-04-2026

$ 710.10 USD

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The CSF - A9X Supra & BMW G-Series High-Performance Radiator is engineered to deliver exceptional cooling performance for high-powered Toyota Supra A9X and BMW G-Series vehicles. Designed with cutting-edge technology and high-grade materials, this radiator ensures efficient heat dissipation, making it ideal for both street and track use. Available through Turner Motorsport, this high-performance radiator is a must-have upgrade for drivers looking to enhance their vehicle's engine longevity and reliability.

Optimized Cooling: Maintains ideal engine temperatures, even during intense driving conditions.
Durable Construction: Made from high-quality aluminum, providing resistance to corrosion and wear.
Direct Fitment: Designed for a seamless, bolt-on installation without any modifications required.
Enhanced Performance: Improves overall engine efficiency by preventing overheating during high-demand situations.
Versatile Use: Perfect for daily driving, racing, or performance builds.

The CSF - A9X Supra & BMW G-Series High-Performance Radiator provides superior performance and durability, making it the ultimate choice for enthusiasts seeking optimal engine cooling and reliability.

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BMW Cooling System Parts & Accessories for BMW A90 MKV Supra B58 3.0L

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OEM Style Hose Clamps

Junction Heat Hose - 11538606278

CSF High Performance Front Mount Heat Exchanger w/ Rock Guard - A90/9...

CSF High-Performance Auxiliary Radiator - A90/G20/G29

CSF - A9X Supra & BMW G-Series High-Performance Radiator

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