Left.CLUB CAB. Right.CLUB CAB. Upper latch bolt. A Bolt used to mount the engine cooling fan Shroud. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Diesel Exhaust Fluid Injector to it's mounting point. Audio Amplifier Bolt. Bolt attaching door latch to vehicle. Audio Amplifier. Diesel Emissions Fluid (DEF) Injector. Diesel Exhaust Fluid (DEF) Injector. Door Latch. Engine Cooling Fan. HEX HEAD. Screw.