BMW part number 63121378368 (superseding 63128350144) is a headlight aiming adjusting screw that fits 1988–1995 US-market BMW E32 7 Series and E34 5 Series models. Unlike parts with mid-year production cutoffs, it spans the entire US production run of both the E32 and E34 generations without a mid-cycle cutoff date.
E32 7 Series (1988–1994).
E34 5 Series (1989–1995).
- 525i / 525iT Touring. 1989–1995 (both M20 and M50 engines).
- 530i / 530iT Touring. 1994–1995.
- 535i. 1989–1993.
- 540i. 1994–1995.
- M5 (3.6L S38). 1991–1993.
Production Cutoff Notes
- No Mid-Cycle Cutoff. BMW used this exact adjuster screw across the entire US run of the E32 (ending with the 1994 model year before the E38 debuted in 1995) and the E34 (ending with the 1995 model year before the E39 debuted in 1997).
- European Touring Extension. In European catalogs, fitment extends slightly past 1995 into early 1996 (02/1996) solely because European E34 Touring wagons (such as the 518g) continued production until the E39 Touring launched.
- Companion Bushing. Each adjuster screw threads into a black rubber mounting bushing (
63121378369) in the headlight carrier frame