Stock coolant expansion tanks are prone to failure after years of constant temperature variations

Designed specifically for the BMW N55 and S55 engines

and engineering

Turbosmart GenV Blow off Valve 4

Application intended for: E90 M3

CSF High-Performance Oil Cooler, BMW E30 Crank Stock coolant expansion tanks areThe BMW E30 oil cooler has been reinvented in a bolt on OEM style design that features all the latest cooling technology (also can fit vehicles with M20 engine swaps). CSF's new technology & featured packed E30 oil cooler is a perfect solution for the growing BMW restoration market. The E30 has become a great platform for engine swaps of all kinds, from S54 BMW motors dropped into the engine bay, all the way to LS engine swaps, everything has been