GM LS Camshaft Retaining Plate Bolts AF463-52GM LS Camshaft Retaining Plate BoltsSuits all LS series engine thrust plates, Pack of 4 AF463 52 463 52 These are the countersunk head style bolts suited to the GM LS retaining plate, both Aeroflow (AF463 51) and also genuine GM12589016. We recommend these screws only be used once and discarded after each use. These bolts are an exact copy of the GM11561455 screws that hold the camshaft retaining plate. Comes in the set of 4 bolts. The required torque