Alternator for a 400 Cummins
Had problems on last trip with check engine light coming on ! had an appointment to have it scanned and code for faulty alternator came up.Said they would order one and to bring it back next week. Was...
Forum Discussion
Take an image of the alternator and post it here in the forum. The rear side makes for the best visual ID. It should have a plate on it somewhere unless it is a Delco 21SI. If this is an 855 series 400 the alternator will be mounted starboard side of the engine (opposite the PT fuel pump) and be level with the top of the frame rail.
