Powermaster Polished 100-Amp 6-Groove GM 12SI Alternator
Highlights
- Available with 3 Add-Ons
- Direct-Fit Replacement
- Better Endurance at High RPMs
- Designed for 1-Wire Install
Powermaster Polished 100-Amp 6-Groove GM 12SI Alternator.
With a tough rectifier and internally regulated design, this alternator is built to last. Powermaster designed it as a direct-fit upgrade for 6-groove applications. It’s perfect for modern accessories and comes in a polished finish. To install it, just swap it with your current alternator and run a new wire from the battery.
Features and Benefits:
- Available with a pulley, cone, and/or baffle
- Direct-fit replacement for stock alternator
- 100-amp, 6-groove, internally regulated design
- Engineered with a heavy-duty rectifier
- Offers better endurance at high RPMs and continuous loads
- Clean, polished finish
- Designed for 1-wire installation
Please Note: The single-wire voltage regulator requires a new, heavy-gauge wire to power the alternator.
California Residents: Proposition 65 Warning
Related Categories: Engine, Alternators
Vehicle Fitment
This product will fit the following Camaro years:
- 1967,
- 1968,
- 1969,
- 1970,
- 1971,
- 1972,
- 1973,
This product will fit the following Chevelle years:
- 1964,
- 1965,
- 1966,
- 1967,
- 1968,
- 1969,
- 1970,
- 1971,
- 1972,
This product will fit the following El Camino years:
- 1964,
- 1965,
- 1966,
- 1967,
- 1968,
- 1969,
- 1970,
- 1971,
- 1972,








