March V-Belt Pulley Set for 1970-1973 302/351W/C Mustangs.Increases horsepower by reducing accessory drag. 12.5-15 RWHP typical. Eliminates belt throwing. Designed for normal street driving. CNC machined to run perfectly true. Billet 6061-T6 aluminum for extra strength and wear. Finished with a ?no polishing? clear powdercoat.
-2-groove crank pulley 5.5?
-2-groove water pump pulley 6.25?
-1-groove alternator pulley 2-11/16?
-Alternator pulley nose cover