Air inlet tube bolt. Left.4.2 W/SUPERCHARGER. Right.4.2 W/SUPERCHARGER. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Bumper Extension to it's mounting point. Air Filter Housing Bolt. Engine Air Intake Hose Bolt. AND WASHER. cleaner ASSEMBLY. Filter Housing. inlet tube. panel. Bumper. Engine Intake Hose.