RWA1443RD 2.3L Adjustable Cam Sprocket for ROUND tooth setup. Lighter than stock, billet aluminum sprocket that allows for 20 degrees of adjustability. Simply loosen the tension bolts and advance or retard your cam without ever going through the hassle of taking anything apart. Requires the round tooth aux. shaft sprocket and the crank drive gear. Recommended for both race and street use. Will NOT fit RANGER engines. Mustang/Pinto only.