The engineers at CSF know cooling. So when it comes to keeping your transmission temps down as you push your M3 / 335i hard on the street or track, the CSF Trans/Oil Cooler is the obvious choice. With an increase in cooling efficiency of around 30%, you can drive with confidence knowing you won't be damaging your expensive transmission due to overheating.
CSF offers the best and most advanced Transmission/Oil Coolers on the market. Keeping your transmission temps down as you push your M3 / 335i hard on the street or track.
The CSF #8042 Cooling product is designed to be a "Drop-In Fit" application. The product will install in the OEM Location with no modifications necessary unless otherwise noted or instructions are included in the product package. Please see the manufacturer repair manual for standard installation instructions. If you do not feel confident installing this product CSF recommends taking it to a qualified installation facility.

• "Drop-in Fit" Requiring No Modifications to Install - Accepts All Attaching OEM Components Including Oil-Line Connections, Mounting Brackets and Shroud/Ducting


• Made with CSF's AC Condenser Technology Using a 1-Row Super-High Pressure 22mm Wide 11-Channel Microtube


• High-Density Multi-Louvered Fin Design with 20% More Surface Area Contact Compared to OEM Unit


• Dual-Pass High-Performance Core with 11 Cooling Tubes vs. OEM 10 Tube Design


• World's 1st True "Plug-And-Play" Transmission Cooler for The E9X M3 Platform


• Lab Tested at approximately 30% More Efficient than OEM Cooler


• Replaces OEM Part Number: 17227521376

Vehicle Fitment