This is a genuine BMW sound insulating lateral trim panel left, part number 51 48 8 204 047. The number stamped on the part is 51488204047; BMW's catalog files it under the short number 8204047. You will find it on our Interior Body shelf, under Other Body equipment parts.
It fits the E46 coupe (323i, 325i, 328i, 330i and M3, 2000–2006), with the M52, M54, M56 or S54 engines — and the European-market versions.
BMW draws it on the Sound Insulating Rear (51_3266) diagram. It weighs about 1.3 kg (2.8 lb).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.
