High Performance Front Mount Heat Exchanger - G8X

Arguably one of the hottest German performance vehicles of the decade, the G8X M3/M4 has quickly become a favorite among enthusiasts and race teams alike. Like most BMWs, the S58 motor has some serious heat issues under heavy driving conditions. CSF has been working tirelessly for the last year on a complete suite of industry-leading cooling products for the G8X platform. Now, with over 9 months of development and testing, CSF is pleased to announce the release of its highly anticipated high-performance G8X M3/M4 Heat Exchanger (CSF #8215) for both 6-Speed Manual (6MT) & ZF8 Automatic Transmissions.

When the new M3/M4 was released in late 2020, it didn’t take long to see them hit the track. CSF’s Engineers and Motorsports department was in attendance for some of the first track days that local R&D Partners & Premier Dealers Studio RSR and Art of Attack took their new G8Xs to. The results were not all that surprising. Similar to the 2nd Gen B58 cars (A90 Supra & BWM G2X), the S58 had major issues with heat soak. This overheating of the intercooler system causes a large spike in Intake Air Temperatures (IATs). Subsequently, the ECU started pulling timing which decreases power output. In extreme cases, this can also send the car into limp mode. This problem became even more prevalent as testing continued into the hot summer months.

CSF’s industry-leading reputation and deep knowledge of high-performance BMW cooling systems allowed its engineers to immediately identify the cooling weak spots on the S58 engine. The engine is very similar to the B58 in the A90 Supra and G-Series BMW 40i models. Both feature a liquid-to-air charge cooler manifold paired with a front mount heat exchanger (water radiator). The Heat Exchanger cools the fluid cycling through the charge cooler, dissipating heat from the system.

Because the charge cooler is built into the manifold, it’s extremely expensive to replace with a high-performance unit. While CSF has developed a high-performance billet charge-air manifold for the S58 Motor (CSF #8233), the heat exchanger is still the most cost-effective way to bring down charge-air temps. The Front Mount Heat Exchanger is responsible for removing heat from the chair-air cooling system and is now recommended as a critical bolt-on upgrade.

The CSF Heat Exchanger features a 2-Row (vs OEM single row) Core that is 42mm thick with CSF’s Exclusive B-Tube Technology. Increasing the size of the core and end tanks adds to the overall volume of the system which helps absorb more heat. The more efficient core not only helps dissipate more heat from the system, but also provides better airflow into the radiator that sits behind the heat exchanger. For vehicles equipped with the ZF8 Automatic Transmission, the heat exchanger core specifications were design concurrently with CSF’s new Race-Spec Dual Core Transmission Oil Cooler (CSF #8221 – coming soon)

Features & Specifications:

• Significantly Reduces Intake Air Temperatures (IATs) for Maximum Performance (with Faster Heat Soak Recovery)
• Improves Air Flow to the Rest of the Cooling System for Lower Engine Coolant 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 Black Rock Guards (upper and lower) & Transmission Cooler Mounting Kit
  • Upper and Lower Rock Guards for Manual Transmission
  • Upper Rock Guard and Transmission Cooler Mounting Kit for ZF8 Auto
• True Plug-and-Play “Drop-in Fit” Installation Requires Absolutely No Modifications
• 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
• Applications:
  • 2021+ BMW G80 M3 (incl. Competition) – 6MT & ZF8 Auto
  • 2021+ BMW G82/G83 M4 (incl. Competition) – 6MT & ZF8 Auto
• OEM Part Number:
  • BMW: 17-11-8-095-283