Genuine BMW part 51 21 8 119 278: Circlip. The number stamped on the part is 51218119278; BMW's catalog files it under the short number 8119278. You will find it on our Interior Body shelf, under Other Body equipment parts.
It fits every E36 body style (318i, 318ti, 320i, 323i and 325i, 1992–1999), with the M40, M42, M43, M44, M50 or M52 engines — and the European-market versions.
BMW draws it on 5 diagrams, among them Front Door Control/Door Lock (41_0730) and Front Door Control/Door Lock (41_0731). It weighs about 1 g (under 0.1 lb).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.
