2.0 LITER. 2010. Tensioner bolt. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Engine Mount Support Bracket to it's Mounting point. Accessory Drive Belt Idler Pulley Bolt. Belt Tensioner Bolt. Belt Tensioner Pulley Bolt. Engine Mount Bolt. Included with: Belt Tensioner.