Joint seal — a genuine BMW part, number 51 33 8 265 497. The number stamped on the part is 51338265497; BMW's catalog files it under the short number 8265497. 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 Exterior trim / Grille / Seals (51_4388) diagram. BMW's catalog calls for two of these at each place it is fitted. It weighs about 100 g (0.2 lb).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.