Moroso Billet Single Groove Crankshaft Pulley - BB Chevrolet - Single Groove - 1968-Earlier (With Short Water Pump) - 30% Reduction - 5.25" O.D. NPT O-Ring to AN Fittings (4) -8AN inletsDerale has been

(4) -8AN inletsDerale has been the leader in performance cooling for decades

harmonic balancer bolt

1976-1980 Cadillac Seville

High Strength Aluminum Alloy ComponentsVehicle Applications: 2007-2013 Silverado & Sierra 1500

Moroso Billet Single Groove Crankshaft Pulley - BB Chevrolet - Single Groove - 1968-Earlier (With Short Water Pump) - 30% Reduction - 5.25" O.D. NPT O-Ring to AN Fittings (4) -8AN inletsDerale has beenMachined from solid billets of the highest grade aircraft aluminum for maximum durability Deep precision machined grooves ensure belt retention even during extreme changes in engine RPM When crankshaft and water pump pulleys are used together, water pump speed is reduced by approximately 30% Hard coat anodized for extended life Moroso Performance Products is one of the worlds most respected suppliers of automotive equipment for racing and street