Genuine BMW part 51 25 8 173 725: Sliding piece. The number stamped on the part is 51258173725; BMW's catalog files it under the short number 8173725. You will find it on our Interior Body shelf, under Locks.
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 2 diagrams, among them Manual Folding Top Flap Mechanism (41_0850) and Central locking system (41_0853). It weighs about 3 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.
