Review on 🔧 Enhanced Performance: 6.0 Blue Spring Kit Upgrade for Ford Powerstroke 2003-2007 - Fuel Pressure Regulator Kit (Fits F250, F350, F450, F550) - Replaces OEM Part 3C3Z-9T517-AG by David Cash

Secure the threads on the fuel line connector. If you are not careful you can damage the body when trying to screw the fitting into the body. You will need to clamp the new body in a vise, but be aware that this aluminum body can be easily damaged by the vise jaws. I would not recommend trying to tighten it by attaching it to the side of the filter housing as the pressure would be required to screw the fuel line fitting into the new housing. Breaking the filter housing is a costly mistake.