Alternator Pulley; GM; 12si; 150 Amp; 6 Grv Pulley/Baffle; 1 Or 3 Wire; Chrome;
Designed for engines that do not have 3 threaded holes in the heads.
- Most Popular Classic Look
- 150 Plus Amps At Top End/100 Plus Amps At Idle
- One Unit For 1 Or 3 Wire Operation
- Individually Dyno Tested with Proof of Performance Guarantee
- High Output Replacement For Early 10DN/10SI/12SI Alternators
