S Series 170 amp Racing alternator for 63-85 GM - 1 wire 1999 - 2003 these alternators also work well

these alternators also work well in many aftermarket or custom bracket installations

4 ohms impedance

4V 130Wx4 1 ohm n/a 4 ohm mono 14

You won't find a more robust alternator for this price anywhere

S Series 170 amp Racing alternator for 63-85 GM - 1 wire 1999 - 2003 these alternators also work wellThe 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 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 on most 1963