Made of 7075 aluminum which is 50% harder & stronger than the factory cam support plate material This cam support plate is designed to use the factory hydraulic chain tension system with the original Twin Cam style camshafts Cam support plate includes bearing retainer plate and hardware. Requires the purchase of 'factory' hydraulic chain drive tensioners. Drops engine temps 20-35 degrees cooler than Screamin Eagle or other aftermarket cam support plates For use only with Feuling High Volume Oil Pump 434-071 or Race Pump 741-279