This is a genuine BMW through-loading cross member trim, part number 51 46 8 204 266. The number stamped on the part is 51468204266; BMW's catalog files it under the short number 8204266. You will find it on our Interior Body shelf, under Other Body equipment parts.
It fits the E46 sedan and coupe (320i, 323i, 325i, 328i, 330i and M3, 1999–2006), with the M52, M54, M56 or S54 engines — and the European-market versions.
BMW draws it on 3 diagrams, among them Trunk trim panel (51_3258) and Rear window shelf / sun blind electr (51_3742). It weighs about 250 g (0.6 lb).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.
