CSF G8X M2 / M3 / M4 (S58) High Performance Front Mount Heat Exchanger

The CSF BMW G8X M2, M3, and M4 High-Performance Front Mount Heat Exchanger (CSF #8215) is engineered to improve charge-air cooling performance for the S58 engine. Developed for both 6-speed manual and ZF8 automatic-equipped vehicles, the upgraded heat exchanger increases cooling capacity and improves heat-soak recovery during sustained street and track use.

The BMW S58 uses a liquid-to-air charge cooling system, with the front-mounted heat exchanger responsible for removing heat from the coolant circulating through the charge-air cooler. As power and sustained load increase, controlling this coolant temperature becomes increasingly important for managing intake air temperatures (IATs) and maintaining consistent engine performance.

CSF replaces the factory 1-row, 35mm core with a larger 2-row, 42mm core featuring its B-Tube technology. The increased core volume and heat-transfer surface area improve thermal capacity while maintaining airflow to the cooling components positioned behind the heat exchanger. For 2026, CSF updated the design with new Track-Spec 5mm-tall multi-louvered fins to further increase surface-area contact and heat dissipation.

For vehicles requiring additional S58 charge-air cooling capacity, the heat exchanger can also be paired with the CSF S58 Charge-Air Cooler Manifold as part of a more comprehensive charge-air cooling system.

Product Details:

• Designed for BMW G87 M2, G80/G81 M3, and G82/G83 M4 with the S58 engine
• 2-row, 42mm high-performance core compared to the factory 1-row, 35mm core
• CSF B-Tube technology
• 2026 Track-Spec 5mm-tall multi-louvered fin design
• Designed to reduce intake air temperatures (IATs) and improve heat-soak recovery
• Improved airflow to the remaining cooling system
• 100% all-aluminum TIG-welded construction
• CNC-machined mounting brackets
• OEM-style quick-connect inlet and outlet
• Direct drop-in installation with no vehicle modifications required
• Includes application-specific Black Rock Guard and transmission cooler mounting hardware
• Compatible with 6-speed manual and ZF8 automatic transmission applications
• 2-year limited warranty
• CSF #8215

Notes:

• 6-speed manual applications include upper and lower Black Rock Guards.
• ZF8 automatic applications include the upper Black Rock Guard and transmission cooler mounting kit.
• For ZF8-equipped vehicles, CSF developed the heat exchanger core specifications alongside its Race-Spec Dual Core Transmission Oil Cooler.