This is a genuine BMW hex Bolt with washer, part number 51 36 8 168 338. The number stamped on the part is 51368168338; BMW's catalog files it under the short number 8168338. 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. BMW's catalog calls for four of these at each place it is fitted. It weighs about 21 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.
