Genuine BMW part 33 52 1 137 482: Hex Bolt with washer. The number stamped on the part is 33521137482; BMW's catalog files it under the short number 1137482. You will find it on our Suspension shelf, under Other Rear Axle parts.
It fits the E36 sedan and coupe (318i, 320i, 325i and M3, 1992–1999), with the M40, M42, M50 or S50 engines — and the European-market versions.
BMW draws it on 2 diagrams, among them Single Components for Rear Spring Strut (33_0367) and Single Components for Rear Spring Strut (33_0386). BMW's catalog calls for two of these at each place it is fitted. It weighs about 67 g (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.