GM 10SI 12 volt alternator with 5/8" pulley and standard 6 and 12 o clock mounting position.  High 100 amp output, 1 wire easy to connect, high quality Black finish. neoprene-sealed bearings for long-life. low cut-in voltage regulators that keeps the extra amps flowing in low idle situations.  High-tech rotors and stators, built with copper and steel to deliver the greatest output with the best reliability. 

• Before ordering please measure your existing belt width to make sure fits this 5/8" wide pulley

Fits:	Early wide belt applications Chevrolet, Buick, Oldsmobile, Cadillac, Pontiac, GMC or any hotrod or 12 volt conversion.
ENGINE TYPE	216, 235, flathead Fords and many other wide belt pulley applications.