LS billet aluminum 8 rib power steering pulley for 1987-2013 Vortec Truck Type 1 pumps. CNC machined from aircraft 6061-T6 billet aluminum. This pulley adds two grooves to the outside of the pulley. Perfect for supercharging applications. Easy to install, beautifully designed, enhance the look of your engine. 

* Will not fit Trail Blazer