This is a genuine BMW covering cap right, part number 51 37 7 028 920. The number stamped on the part is 51377028920; BMW's catalog files it under the short number 7028920. You will find it on our Interior Body shelf, under Other Body equipment parts.
It fits the E46 compact (316ti, 318td, 318ti, 320td and 325ti, 2001–2004), with the M47N, M54, N40, N42, N45 or N46 engines.
BMW draws it on the Glazing II (51_4394) diagram. It weighs about 14 g (under 0.1 lb).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.
