This is a genuine BMW filling insert left, part number 54 31 8 158 579. The number stamped on the part is 54318158579; BMW's catalog files it under the short number 8158579. You will find it on our Exterior Body shelf, under Other Sliding Roof / Folding Top 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 Folding Top Mounting Parts (54_0181) diagram. It weighs about 1 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.
