This is a genuine BMW left pad, part number 51 47 8 163 271. The number stamped on the part is 51478163271; BMW's catalog files it under the short number 8163271. 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 Trunk trim panel (51_2109) diagram. It weighs about 1.0 kg (2.3 lb).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.