Quick view Mechman 240 amp S series alternator for Jeep 4.0 Late 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 of power produced than conventional 3 phase alternators. 12 diodes, t… Choose Options Add To Compare