This is a genuine BMW bump stop, part number 51 46 7 075 828. The number stamped on the part is 51467075828; BMW's catalog files it under the short number 7075828. 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 Rear Window Shelf (51_4497) diagram. BMW's catalog calls for two of these at each place it is fitted. It weighs about 1 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.
