Help keep your alternator or generator turning smoothly with the Schaeffler Alternator Bearing / Generator Commutator End Bearing 6303-2Z, a deep groove ball bearing (DGBB) from a trusted OE manufacturer. It is a direct-fit replacement for the listed applications, including the 1977-1981 Dodge D150 [L6-3.7L, V8-5.2L, V8-5.9L], 1978-1984 BMW 733i [L6-3.2L] and 1980-1984 Audi 4000 [L5-2.2L], plus many more Audi, BMW, Dodge, Jeep and Plymouth models. See the Buyer's Guide tab for the full list.
This bearing is listed under both names, alternator bearing and generator commutator end bearing. It is cataloged for front, rear and drive-end positions, depending on the application.
- OE expertise: Designed and built by Schaeffler to stringent OEM standards for assured quality.
- Durability: Engineered with high-grade materials for dependable reliability and lifespan.
- Smooth operation: Designed for reduced friction and wear.
- Dimensions: 17 mm (.669 in) inside diameter, 47 mm (1.850 in) outside diameter, 14 mm (.551 in) width.
This bearing supports the rotating shaft of the alternator or generator so it can turn freely inside the housing. Signs it may need replacing include a whine, growl or grinding noise from the unit that changes with engine speed, or roughness when the pulley is turned by hand. If a worn bearing is the cause, this part replaces it. Diagnose the noise source first, because belts, tensioners and pulleys can make similar sounds.
The catalog lists one bearing per application. Country of origin: Republic of Korea.
Interchange: 6303-2ZJ · 6303.2ZR
63032ZJ · 63032ZR · 6303ZZ
This part cross-references / interchanges with the following part numbers:
6303ZZ, 6303-2Z, 6303-2ZJ, 6303.2ZR
