Powermaster Alternator - GM Original Look - 150 amp - 12V - Single V-Belt Pulley - Black - GM H753C4252 Aluminum gear drive provides accurate

Aluminum gear drive provides accurate cam timing and the ability to adjust valve timing without removing the oil pan

not change it

5/8 to 1/2 in Bore

Includes 12830 chrome moly intermediate shaft

NPT Plug (Hex Head) - 3/8" NPT at low everyday prices

Powermaster Alternator - GM Original Look - 150 amp - 12V - Single V-Belt Pulley - Black - GM H753C4252 Aluminum gear drive provides accurateProduct Description: Alternator GM Original Look 12SI 150 amps 12V 1 Wire 3 Wire Single V Belt Pulley Aluminum Case Black Powder Coat GM Sold Individually Powermaster produces alternators and starters for both street rod and racing applications. They also offer related accessories, including brackets, wiring harnesses, pulleys, and drive kits. Powermaster Motorsports is the leader in high performance alternators and starters for auto racing.