Quick view Mechman S Series 320 Amp Alternator with 6.15" Bolt Pattern - CHROME w/ March Pulley Now: $799.00 MSRP: $899.00 Was: The S series of 6 phase alternators offers incredible low RPM 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 o… Add to Cart The item has been added Add To Compare