3.4 LITER. Engine carrier bolt. Front. M10x135. PartQualifier: M10x135. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Engine Mount Crossmember to it's mounting point. Engine Cradle Bolt. Engine Mount Bolt. carrier. Cradle. Crossmember. insulator. HEX - HEAD SCREW 10X13. Motor.