This is a genuine BMW fixing bow, part number 84 13 8 385 838. The number stamped on the part is 84138385838; BMW's catalog files it under the short number 8385838. You will find it on our Instruments & Electronics shelf, under Other Communication systems parts.
It fits the E46 touring (323i and 325i, 2000–2005), with the M52, M54 or M56 engines — and the European-market versions.
BMW draws it on 3 diagrams, among them Single parts, SA 627, trunk (84_0118) and Single parts f Nokia3110 luggage comp (84_0434). It weighs about 252 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.