This metal sleeve fits inside the rubber mount for radiators on the E30 and E28. It may also be found on other various rubber mounts used on other models.
The original sleeves are often lost or rusty, which causes the radiator to be loose on its frame. A new sleeve is recommended to keep the radiator in place and maintain a correct OE appearance.
BMW Fitments:
3 Series
E30 (84-91) > 325e
E30 (84-91) > 325es
E30 (84-91) > 325i
E30 (84-91) > 325is
E30 (84-91) > 325ix
E30 (84-91) > M3
5 Series
E28 (82-88) > 528e
E28 (82-88) > 533i