This is a genuine BMW cover instead of door contact switch, part number 61 31 1 387 083. The number stamped on the part is 61311387083; BMW's catalog files it under the short number 1387083. You will find it on our Electrical shelf, under Switch.
It fits the E36 sedan, touring and compact (318i, 318ti, 320i, 325i, 328i and M3, 1992–1999), with the M40, M42, M43, M44, M50 or M52 and other engines — and the European-market versions.
BMW draws it on 2 diagrams, among them Sealing cap/plug (51_9855) and Various switches (61_0748). 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.
