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

Made for 2006 - 2010 GM 3.5L Car Amperage Output: 170 Amps Voltage Compatibility: 12 Serpentine Style Pulley Included Internal Regulator Included Mechman S-Series 170 Amp Racing Alternator 63 - 85 GM Natural Finish 7127170 This listing includes: (1) S-Series 170 Amp Racing Alternator 63 - 85 GM Natural 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 for