2.0 LITER. Belt tensioner bolt. FROM 9/05/12. A threaded rod with a drive head (such as hex, 12 point, torx, etc) on one end used to secure the Drive Belt Cover to it's mounting point. Belt Tensioner Bolt. Engine Water Pump Bolt. Engine Water Pump Pulley Bolt. HEX. HEAD. mount. Accessory Drive Cover. Engine Water Pump. Shield screw.