Valve Spring Retainer Super Lock Valve Spring Retainers Super Lock Valve Spring Retainers; 10 deg. Lock Angle; Valve Spring Dia. 1.437 in. - 1.5 in.; .69 in. x 1.05 in.; 16 pc.; SPECIFICATIONS: Valve Spring Dia. Outside: 1.437 in. FEATURES: Handle Higher Pressures 4140 Chromemoly Black Oxide Finish Superior Strength Ultimate Stability 1 Year Limited Warranty New valve springs with larger diameters require new retainers to handle the higher pressures developed by the springs. COMP Cams steel retainers are the solution. Precision-machined from 4140 chromoly and finished in black oxide, these retainers are specifically designed for positive location when combined with COMP Cams' high-quality valve springs. They're available for single, double, and triple-spring applications. COMP Cams manufactures truly superior hydraulic and solid flat tappet, hyd and mechanical roller, and overhead camshafts for everything from OE replacement to full race, designed and manufactured using cutting-edge technology and the finest engineering in the industry. Whether your engine is naturally aspirated, or you run nitrous, or a supercharger or turbo, our cams make more horsepower than any other. Looking for that ultimate hard-hitting muscle car idle? Check out our aggressive new Thumpr Cams. Match our camshafts up with our competition-grade lifters, valve springs, timing sets, and other supporting components, and you'll experience the ultimate in race-winning reliability!