CSF BMW E9X M3 Race-Spec DCT/6-Speed Oil Cooler

CSF #8042 Race-Spec DCT/6-Speed Transmission Oil Cooler is a high-performance cooling upgrade developed for the BMW E9X M3, including the E90, E92 and E93 M3. It is designed to provide additional thermal capacity for both DCT and 6-Speed Manual transmission applications.

The cooler uses CSF's AC Condenser Technology with a 1-row Super-High-Pressure 22mm wide, 11-channel microtube core. Its Dual-Pass High-Performance Core uses 11 cooling tubes compared with the OEM 10-tube design.

A High-Density Multi-Louvered Fin Design provides approximately 20% more surface-area contact than the OEM cooler, helping improve heat transfer within the available installation space.

CSF laboratory testing indicates approximately 30% greater cooling efficiency than the OEM cooler. This additional cooling capacity is particularly useful for E9X M3s subjected to aggressive street driving, high ambient temperatures or repeated track use.

For DCT-equipped E9X M3 models, #8042 functions as a dedicated transmission oil cooler. For 6-Speed Manual models, CSF specifies the same unit as an engine oil cooler, making the product particularly versatile across the E9X M3 platform.

The #8042 is engineered as a Drop-In Fit, retaining the OEM oil-line connections, mounting brackets and factory shroud/ducting. Installation requires no vehicle modifications, making it a direct upgrade to the factory cooling system.

CSF lists the product for BMW E90 M3 (2008–2012) and E92 M3 (2013) applications with the 4.0L V8, and the cooler replaces OEM Part Number 17227521376.

For E9X M3 owners looking to improve transmission or engine oil thermal management, depending on the transmission configuration, the CSF #8042 Race-Spec DCT/6-Speed Oil Cooler provides a focused cooling upgrade while maintaining the factory installation concept.