This is a genuine BMW contact door window, part number 65 75 8 366 218. The number stamped on the part is 65758366218; BMW's catalog files it under the short number 8366218. You will find it on our Instruments & Electronics shelf, under Alarm system.
It fits the E36 sedan, coupe, touring and compact (318i, 318ti, 320i, 323i, 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 4 diagrams, among them Alarm system (65_1008) and Alarm system (65_1010). BMW's catalog calls for two of these at each place it is fitted. It weighs about 19 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.
