3.5 LITER W/TURBO. M12x45mm. PartQualifier: M12x45mm. Torsion damper bolt. A threaded rod with a drive head (such as hex, 12 point, torx, etc) on one end used to secure the Engine Support Rod to it's Mounting point. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Engine Torque Strut to it's Mounting point. Automatic Transmission Mount Bolt. Engine Mount Bolt. Automatic Transmission. Engine Support Rod. Torque Strut. Torsion damper.