Multi-use nut. Used throughout GM/Duramax Vehicles. Engine Fan Coolant. BOLT. BRAKE. Vacuum Power Brake. A/C Compressor Mounting. A/C Refrigerant. Air Cleaner. Body Wiring. Brake Pedal. Catalytic Converter. Chassis/Engine Wiring Harness. Cross Member. Emission Control System. Engine Coolant By-Pass. Engine Lift. Engine Mounting. Engine Oil Cooler. Engine Oil Level. Exhaust Pipe. Front Spring. Fuel Injection. Fuel Line. Fuel Pump. Generator Mounting. Hub Front and Rear. Hydraulic Power Brake Booster. Ignition Coil. Inflatable Restraint System. Instrument Panel. Parking Brake Apply Lever. Seat. Seat Belt. Side Step. Stabilizer Shaft. Steering Gear Mounting. Steering Gear Shaft. Steering Knuckle Lower Control Arm. Steering Shaft U Joint. Tail Lamp Mounting. Transmission Control. Transmission Gearshift Lever. Transmission Mount and Support. Transmission Mounting. Transmission Mounting Support. Transmission Oil Filler. Turbocharger/Supercharger Turbine. Voltage and Glow Plug.