These CNC - fabricated aircraft - quality billet aluminum bushings are designed for 1994 - 2003 Ford F - Series trucks with 7.3L Powerstroke engines. They prevent the factory - stamped sheet metal intake plenums from crushing or distorting when you tighten the CAC boots. Part number is 423001. Features include aircraft - grade quality and billet aluminum construction.

How to use: First, make sure your vehicle is turned off and cooled down. Then, locate the intake plenums and the CAC boots. Insert these billet aluminum bushings in the appropriate places before tightening the CAC boots. This will help reinforce the intake plenums. Note: When installing, be careful not to over - tighten the boots as it may still cause damage. Maintenance: Periodically check the bushings for any signs of wear or damage. If you notice any issues, replace them promptly. These bushings are made of high - quality materials, but regular inspection will ensure their long - term performance.