Moroso Billet Single Groove Crankshaft Pulley - BB Chevrolet - Single Groove - 1968-Earlier (With Short Water Pump) - 30% Reduction - 5.25" O.D. YA0828KARTMM04 Jiffy-tite Motorsports Quick-connect fittings provide

Jiffy-tite Motorsports Quick-connect fittings provide so many advantages over traditional AN fittings

The smooth 1-5/8 in tube design provides ample exhaust flow to let your C10/C20

We're reinventing the ownership experience through our own relentless drive to serve our customers both on and off the road

1-13/16-20 in Inlet / Outlet

Moroso Billet Single Groove Crankshaft Pulley - BB Chevrolet - Single Groove - 1968-Earlier (With Short Water Pump) - 30% Reduction - 5.25" O.D. YA0828KARTMM04 Jiffy-tite Motorsports Quick-connect fittings provideMachined 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