High-Performance Engine Oil Cooler | BMW G2X M340i/M440i & G42 M240i

CSF High-Performance Engine Oil Cooler for BMW M240i, M340i & M440i (B58D) As power levels increase and driving demands become more aggressive, controlling engine oil temperature becomes critical to maintaining consistent performance. The CSF High-Performance Engine Oil Cooler was engineered specifically for BMW's B58D-powered G42 M240i, G20/G21 M340i, and G22/G23/G26 M440i platforms to provide improved thermal capacity while retaining factory fitment and functionality. Featuring CSF's advanced microtube core technology, this upgraded cooler increases overall core volume by approximately 14% compared to the factory unit, allowing for greater heat rejection and improved temperature stability during spirited street driving, track use, and high-horsepower applications. The increased cooling efficiency helps reduce the likelihood of heat soak, power reduction, and elevated oil temperatures during extended high-load operation. Designed as a direct replacement for the OEM oil cooler, the unit utilizes factory mounting locations, ducting, and airflow management components for a straightforward installation with no modifications required. A durable integrated rock guard provides additional protection against road debris and track hazards, helping safeguard one of the engine's most critical cooling systems. Features High-efficiency 32mm microtube core design Approximately 14% greater core volume versus OEM Optimized oil flow characteristics for high-performance use Multi-louvered fin design for improved heat transfer Integrated rock guard protection OEM-style inlet and outlet connections Retains factory mounting points and ducting Durable robot-welded aluminum construction Direct bolt-in installation 2-Year Limited Warranty Applications 2022+ BMW G42 M240i / M240i xDrive 2020+ BMW G20/G21 M340i / M340i xDrive 2021+ BMW G22/G23/G26 M440i / M440i xDrive Fitment Notes Fits B58D-equipped vehicles only Requires BMW Motorsport Engineering Package (S33TA) Not compatible with B58N applications VIN verification recommended prior to ordering Whether you're building a dedicated track car, running increased boost levels, or simply looking to add additional thermal capacity for demanding driving conditions, the CSF Engine Oil Cooler provides a proven solution for maintaining stable oil temperatures and protecting your B58-powered BMW. CSF# 8372