Vacuum Non-Return Valve, BMW - F22, F3X, G30, G12, G01, G02 (B46, B58)

This part is listed by BMW as BMW part number 11667620923 (11 66 7 620 923) and is described as Genuine BMW Non-Return Valve for Brake Booster Vacuum on B46, B48, B58, and N57 engines.

This is a Genuine BMW vacuum check valve with a two year warranty. Buying a Genuine part will usually be more expensive than an OEM or aftermarket brand but you are assured that it meets BMW's designs for fitment, performance, and longevity. It will also be the very latest design, incorporating any updates or revisions that an aftermarket brand typically will ignore.