BMW M3/M4 (G8X) Transmission Oil Cooler w/ Rock Guard CSF 8221

The engineers at CSF know cooling. So when it comes to keeping your transmission temps down as you push your BMW G8X M3/M4 hard on the street or track, the CSF ZF8 Trans Cooler is the obvious choice. With an increase in cooling efficiency of ~30%, you can drive with confidence knowing you won't be damaging your expensive transmission due to overheating.