Item Part Description Quantity Variation Number 4609 1 223435 DRAIN VALVE 1 2 224157 CAP 1 3 GM98729 Cam Follower Roller 12 4 GM50232 Orifice 6 5 223716 KIT 6 6 GM79817 O-Ring 6 7 GM79818 Shim 6 8 - Cylinder Liner 6 9 GM79820 Gear 1 10 GM50141 Gear 1 11 GM50132 Washer 1 12 352700 SHAFT KEY 1 13 GM79821 Camshaft 1 14 GM18873 Pipe plug 5 15 GM59793 Sensor (engine speed) 2 16 360180 O-RING, 17.3 X 2.2 MM 1 17 GM18862 Pipe plug, 1/2” 3 18 GM32919 Sensor, pressure 1 19 352748 BEARING CAP 6 20 GM79822 Cap Screw 14 21 352813 BEARING CAP, THRUST 1 22 223866 CAP 1 23 GM79823 Bushing 6 24 -- Order short block assembly 1