Top, side member, right — a genuine BMW part, number 41 11 7 011 522. The number stamped on the part is 41117011522; BMW's catalog files it under the short number 7011522. You will find it on our Exterior Body shelf, under Other Bodywork parts.
It fits the E46 convertible (323i, 325i, 330i and M3, 2000–2006), with the M52, M54 or S54 engines — and the European-market versions.
BMW draws it on the Single Components for Body-Side Frame (41_1337) diagram. It weighs about 2.6 kg (5.8 lb).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.