This is a genuine BMW gasket left, part number 51 36 8 135 365. The number stamped on the part is 51368135365; BMW's catalog files it under the short number 8135365. You will find it on our Interior Body shelf, under Other Body equipment parts.
It fits the E36 convertible (318i, 323i, 325i, 328i and M3, 1994–1999), with the M42, M43, M44, M50, M52 or S50 and other engines — and the European-market versions.
BMW draws it on the Door Window Lifting Mechanism Rear (51_2102) diagram. It weighs about 37 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.
