SBF Ford Aluminum Serpentine Underdrive Pulley Set SB Windsor V8 302 351W Billet. 5.8 L / 351 in3 generally referred to as 351W. FOR FORD SMALL BLOCK WINDSOR V8. This set is made from billet aluminum ,its designed to slow the speed of your serpentine system, and will help to increase by reducing parasitic loss.
