Reinforcement column A inside left — a genuine BMW part, number 41 11 7 011 527. The number stamped on the part is 41117011527; BMW's catalog files it under the short number 7011527. You will find it on our Exterior Body shelf, under Other Bodywork parts.
It fits the E46 coupe and convertible (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 2 diagrams, among them Single Components for Body-Side Frame (41_1262) and Single Components for Body-Side Frame (41_1337). It weighs about 332 g (0.7 lb).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.