Powermaster 57294 GM 12SI 150 Amp Alternator, Black

Powermaster's most popular GM alternator fits most models, 1965-'85 with straight mount 6.61 inch bolt spacing. Works as 1 or 3 wire operation. Internally regulated. Pulley included, single groove. V-belt style. 150 amp with 90 amps at idle, and 125 amps at cruising speed. Black finish with fan baffle. Powermaster Alternator FAQ's (Link) See the difference between the popluar alternators we offer by reading our tech article, GM Alternator Buying Guide (Link) and learn how to correctly install your new 1-wire alternator by reading our tech article, 1-Wire Alternator Conver