15% PRO SERIES SERPENTINE PULLEY KIT

15% Serpentine and Small Block Chevy Pulley Kit.

3.5” Crank Pulley and 4.0” Water Pump Pulley.

(Single Main 6 Groove with 3 Groove Front Accessory Drive)

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.