LS billet aluminum stock replacement 8 rib alternator pulley. This replaces your dull, plain steel alternator pulley. 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 Corvette, CTSV, or any of the clutch/decoupler pulley alternators.