15% SERPENTINE PULLEY KIT, SB CHEVROLET

15% Serpentine and Small Block Chevy Pulley Kit.

3.0” Crank Pulley and 3.5” Double 6 Groove Water Pump Pulley.

Pulleys are hard coated to C-70 Rockwell hardness and machined to SAE specifications with 30% more surface for the belt to contact. Standard pulley kit weighs only 1.9lbs. For use with KRC power steering pumps. Based off of SBC short water pump. Does not include belt.