Quick view Mechman 240 amp Alternator for GM Ecotec - Single Wire Turn On Now: $429.00 MSRP: $529.00 Was: S Series The S series of 6 phase alternators offers incredible output in a compact and durable package. Highly efficient, these units use less horsepower per Kw produced than conventional 3 phase alternators. 12 diodes, twin rect… Choose Options Add To Compare