With over 50 years of experience in the manufacturing of OE replacement radiators, it was only natural that Koyo develop a lightweight, high performance radiator line.  Koyo is proud to offer all aluminum performance radiators designed as a true drop in installation for select vehicles, utilizing the factory equipped fan shrouds without any modifications necessary.  

BMW E36 3 Series / M3 ( Fits E30 1988-1991 V6)
BMW E46 M3