Mechman S-Series 170 Amp Racing Alternator 63 - 85 GM Black Finish 7127170B

Made for Most 1963 - 1985 GM Vehicles Amperage Output: 170 Amps Voltage Compatibility: 12 Serpentine Style Pulley Included Internal Regulator Included Mechman S-Series 170 Amp Racing Alternator 63 - 85 GM Black Finish 7127170B This listing includes: (1) S-Series 170 Amp Racing Alternator 63 - 85 GM Black Finish The S series of 6 phase hairpin 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 outstanding airflow ensure much better durability than standard Delco based alternators, even in severe  conditions. This unit comes with a 2.5" V-Pulley installed and also includes a 2.1" 6 rib serpentine pulley for alternate applications. This custom designed housing directly replaces standard Delco 10DN, 10SI and 12SI alternators on most 1963 through 1985 GM vehicles. A side output stud and seamless rear cover with a side output plug allow fo