This is a genuine BMW sound insulation for ventilation right, part number 51 48 8 151 136. The number stamped on the part is 51488151136; BMW's catalog files it under the short number 8151136. You will find it on our Interior Body shelf, under Other Body equipment parts.
It fits the E36 sedan (318i, 320i, 325i, 328i and M3, 1992–1999), with the M40, M42, M43, M44, M50 or M52 and other engines — and the European-market versions.
BMW draws it on the Sound Insulating Rear (51_2083) diagram. It weighs about 83 g (0.2 lb).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.
