Mishimoto E46 M3 Radiator

M3’s dont really have a rep for overheating unless that is you’ve thrown on a few significant modifications.  And if you have an E46 M3 its almost impossible to not modify it!  Its true there was a study on it…  Anyway more power means more efficient cooling and everyone’s favorite radiator manufacturer has an application for the E46 M3 that will improve cooling by 30% which isn’t a number to sneeze at!