CSF 8032
The stock oil cooler for the s54 is alright for street use, but as soon as you hit the track, the cooler gets overwhelmed and temperatures start rising. It's not uncommon to see oil temps get to over 265 after only a few laps in warm weather with the stock cooler.
The CSF all-aluminum direct replacement oil cooler features 8 rows of cooling fins with a dual pass design, and can improve oil cooling by 35%! A must-have for any hard driven or tracked M3.