E34-Engine

One of the most popular modifications on the OBD2 M52 engines, is to M50 manifold swap it from an earlier OBD1 version.  The M50 manifold has short...

Are you looking to convert your OBD2 M52 or S52 to OBD1?  The OBD2 coolant pipe is press fit in with orings, while the OBD1 coolant pipe uses a tra...