CSF F1X M5/M6 and F9X M5/M8 High-Performance Engine Oil Cooler

Starting with the upgraded core design, CSF swaps the fragile Tube & Fin style of the original BMW oil cooler for a heavy-duty Bar & Plate core. This makes it far more impact-resistant, which is crucial given the vulnerable mounting position many M5, M6, and M8 models face, especially with lowered suspension. This cooler is designed to handle the extra heat generated by tuned S63 engines, particularly those with upgraded turbos or the Carbahn S63 Stroker Kit, preventing limp mode and potential engine damage.

Beyond the core, CSF addresses other weak points in the factory design. The connection blocks are CNC-machined and TIG-welded for extreme durability, and the end tanks are also TIG-welded, offering a stronger, more reliable seal than the original brazed construction. With a 33% larger core, featuring three additional rows and a thicker 60mm profile compared to the OEM 45mm core, this cooler significantly improves heat dissipation. This makes it a smart investment for any M5, M6, or M8 owner, whether it's a daily driver, weekend cruiser, or track car, helping to avoid costly repairs and extend engine longevity.

This CSF oil cooler is designed as a true plug-and-play solution for a range of BMW M vehicles, including models like the M5, M6, and M8. While it's a direct fit, it's recommended to trim the OE ducting and lower radiator cradle for optimal fitment. It comes with CNC-machined mounting brackets and OEM-style inlet/outlet connections, ensuring a smooth installation process. Each unit is individually leak and pressure tested, and it's backed by a 2-year limited warranty.