5.7 LITER. Manifold nut. REG & QUAD CAB. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Cruise Control Servo. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Exhaust Manifold Heat Shield. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Exhaust Pipe Heat Shield. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Floor Pan Heat Shield. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Power Steering System Oil Cooler. Back Glass Wiper Arm Nut. Engine Cooling Fan Blade Nut. Exhaust Manifold Nut. Radiator Mount Nut. Running Board Nut. Steering Shaft Nut. Included with: Exhaust Manifold, Manifold assembly.