320 amp S series alternator for early 5.9L Cummins 5.7L Be sure to calculate your

Be sure to calculate your pulley ratio for high RPM or racing applications to ensure the alternator is not over-spun when at high engine RPM

reliable power and ground wiring

and output at engine idle RPM

(on most vehicles)

or prepared fiberglass

320 amp S series alternator for early 5.9L Cummins 5.7L Be sure to calculate yourThe 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, twin rectifier plates and outstanding airflow ensure long service life, even in severe conditions. Installation Notes: This unit comes equipped with a smaller 1. 75 inch diameter alternator pulley, and will require a slightly shorter