Booster nut. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Intercooler pipe. A/C Compressor Nut. Alternator Nut. Door Mirror Nut. Engine Air Intake Resonator Nut. Part cannot be reused/reinstalled. Power Brake Booster Nut. Steering Column Nut. Steering Shaft Nut. Hex. Flanged. Air Conditioning (A/C) Compressor. Alternator. Charge Air Cooler Pipe. Door Mirror. Duct. Engine Air Intake Resonator. Intercooler Pipe. Power Brake Booster. Pressure valve. Steering Column. Steering Shaft. Water outlet.