This is a genuine BMW right upper front belt "BMW motorsport", part number 72 11 2 257 464. The number stamped on the part is 72112257464; BMW's catalog files it under the short number 2257464. You will find it on our Interior Body shelf, under Other Parts and accessories, body parts.
It fits the E36 coupe and convertible (318i, 323i, 325i, 328i and M3, 1992–1999), with the M42, M43, M44, M50, M52 or S50 engines — and the European-market versions.
BMW draws it on the Safety Belt Front Right (72_0333) diagram. It weighs about 1.1 kg (2.4 lb).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.
