S Series 240 amp "one wire" alternator for 1963-1985 GM - BLACK 6.1L 75 inch diameter pulley on

75 inch diameter pulley on this unit is ideal for maximizing amperage capability at engine idle RPM

000 watt mono block

Anything less than 200'

this unit is not recommended for use over 5

this tried-and-true alternator features 16 diodes for excellent durability

S Series 240 amp "one wire" alternator for 1963-1985 GM - BLACK 6.1L 75 inch diameter pulley onThe 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 custom designed housing directly replaces standard Delco 10DN, 10SI and 12SI alternators. A side