Vent Valve: The crankcase ventilation valve is also called a check valve, which is a component of the crankcase ventilation device installed inside the engine.. Good quality aftermarket replacement part.. Replacing OE Number: 11151703484 11151703775 11151740393 13411733217. Fitment: for BMW 323is 1998-1999, for BMW M3 1996-1999, for BMW 328i 1996-1999, for BMW Z3 1997-2000, for BMW 328is 1996-1999, for BMW 528i 1997-1998, for BMW 323i 1998-1999. Note: No instruction. Professional installation is recommended!.
