Using this HPOP fitting kit is quite straightforward. First, make sure your vehicle is turned off and cooled down. Then, locate the old STC fittings on your 2004 - 2007 Ford F - Series with a 6.0L Powerstroke engine. Remove the old parts carefully. Now, take the parts from the kit. Use the support bracket to hold the fitting and branch tube firmly. Connect the components using the snap - to - connect feature. Secure everything with the provided bolts. When it comes to maintenance, check the fittings regularly for any signs of wear or leaks. If you notice any issues, replace the parts as needed. Also, keep the kit clean to ensure its long - lasting performance. And always follow the safety procedures when working on your vehicle.