Cooling duct screw. Left.W/O AWD. Right.W/O AWD. A threaded rod with a drive head (such as hex, 12 point, torx, etc) on one end used to secure the Frame Rail End to it's mounting point. Brake Air Duct Bolt. Engine Crankshaft Position Sensor Bolt. Engine Water Pump Bolt. Brake Air Duct. Cooling Duct. Engine Crankshaft Position Sensor. Frame Rail End. Pulley. Tube.