2017. Heat shield bolt. A threaded rod with a drive head (such as hex, 12 point, torx, etc) on one end used to secure the Engine Mount Heat Shield to it's mounting point. A threaded rod with a drive head on one end used to secure the Curtain Air Bag Inflator Module to its mounting point. Engine Coolant Reservoir Bolt. AND WASHER. Coolant Reservoir. Mount Shield. Curtain. Head screw. Reservoir tank.