1955-68 CHEVY BlACK STEEL CRANK A/C ADD ON PULLEY - 1 GROOVE (SHORT) Black finish steel one groove crank A/C add on pulley for short water pump. Use with 1955-68 small block P/N: HZ-9603 or with 1955-68 big block P/N: HZ-9816. Diameter: 7-3/4" Depth: 2-15/16" .
