Description:

The 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 CS130 based alternators, even in severe conditions.
This custom designed housing directly replaces standard CS130 "left mount" alternators as used on 1987-1995 Chevy C1500 Pickups and some aftermarket accessory drives. A side output stud and seamless rear cover with a side output plug allow for better clearance from the back of the alternator to the front of the engine and a smooth appearance. A single wire on the provided pigtail gets connected to any ignition switched 12V+ source to turn the alternator on and off with the ignition switch. Simply run a properly sized positive and ground cable from the alternator to the terminals of the battery and the alternator will work perfectly, regardless of what kind of wiring harness you have. Because of their compact size and standard GM mounting ears, these alternators also work well in many aftermarket or custom bracket installations.
Fitment Guide:

Make
Model
Engine Size
Year

Buick
Roadmaster
5.0L / 5.7L
1991 - 1993

Chevrolet
Astro Van
4.3L
1987 - 1995

Chevrolet
Camaro
5.0L / 5.7L
1988 - 1992

Chevrolet
Full Size Truck
All Gas Engines
1987 - 1995

Chevrolet
S-10 / S-10 Blazer
4.3L
1998 - 1993

Chevrolet
Suburban
All Gas Engines
1987 - 1995

Chevrolet
Tahoe / Full Size Blazer
All Gas Engines
1987 - 1995

GMC
Full Size Truck
4.3L
1987 - 1995

GMC
Full Size Truck
5.0L
1987 - 1995

GMC
Full Size Truck
5.7L
1989 - 1995

GMC
Safari
4.3L
1990 - 1993

GMC
Suburban
All Gas Engines
1987 - 1995

GMC
Yukon
All Gas Engines
1987 - 1995

Oldsmobile
Bravada
4.3L
1991 - 1993

Pontiac
Firebird
5.0L / 5.7L

1988 - 1992