Quick view Mechman S Series 240 amp Alternator for 4.6L Cadillac Late Now: $429.00 MSRP: $529.00 Was: The S series of 6 phase alternators offers incredible output in a compact and durable package. Highly efficient, these units use less horsepower than conventional 3 phase alternators. 12 diodes, twin rectifier plates and outstandi… Choose Options Add To Compare