Yesterday, I looked up the injector number for the M44 engine. I was pretty sure that it would be a 4 pintel injector. Today I visited the junkyard near my business that has a 93 & 95 318...I have been buying parts off of both these cars. They would not sell me the injectors from the motors. They said the injectors stayed with the motors. Anyway, the guy whipped out a fuel rail with 4 injectors attached. He said it was from a BMW engine that was sold in parts. I read the number on the injectors & sure enough they were Bosch 0 280 150 501. The guy asked for $35 a piece...no warrantee. I offered him $80.00 for the whole assembly including fuel rail...he said oh all right. Anyway I got 4 injectors from an M44...they are clearly 4 pintels. I hope these fit my M42 318is 1993. Has anybody used these injectors in their M42? Where can I buy "O" rings, seals & filter to overhaul?