Alternator Pulley, OEM - E82 128i N51, E9X 325i/330i, E9X 328i N51, E60 525i/530i

OEM replacement alternator pulley for E82 128i (N51 SULEV model), E9X 325i/330i, E9X 328i (2007-2008 N51 SULEV model), and E60 525i/530i N52. This pulley fits cars with a Valeo alternator.

This pulley is known as a overdriving, decoupling, OAD, or ADP pulley and has an internal dampening system that can wear out or fail. This can cause improper belt tension, vibration, slipping, noise, and poor alternator performance. There is no suggested replacement interval so check the overall condition of the pulley and listen for buzzing or squealing noises from the pulley itself. Removal and installation requires a special tool - see Related Items below.

This part number replaces or is an alternative to BMW part numbers 12 31 7 570 152, 12317550001, 12317536960, 12317516105, 12317505927.

This is an OEM alternator pulley manufactured by INA - the original supplier to BMW for this part, as well as many other pulleys and bearings. As the OEM it meets all of BMW's original design, fitment, and performance requirements and is TUV approved. OEM parts are the best alternative to more expensive Original BMW parts because they are virtually identical without the inflated price tag. This part has a two year warranty.

For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.