AccurateDiesel 6.0L Powerstroke Billet Adjustable Fuel Pressure Regulator Housing BLUE Quickly and easily adjust fuel pressure to exactly where you want it in seconds! CNC machined from a single piece of aluminum, comes with a beautiful anodized blue finish to show off your modification and dress up your engine compartment Pressure adjustment screw / shaft features a double o-ring seal design to prevent the possibility of any fuel leaks and is made from stainless steel to prevent corrosion No more need for trial and error, no need to take the pressure regulator housing on and off multiple times while you experiment with blue springs, stretching springs, cutting springs, installing BB's, etc! A new "key-hole" gasket is included installed on every unit.