6 0L Powerstroke Fuel Pressure Test Fitting Adapter fit for Ford Diesel Engine 2003-2010

Instruction -Remove the factory fuel pressure test plug (Allen head) located on the secondary fuel filter housing on top of the engine. See photo above for exact location. - Screw in the adapter fitting and tighten lightly with a wrench to seat the oring - Attach your fuel pressure gauge to the Schrader fitting and finger tighten. - Start the engine and carefully check for leaks - When finished, remove the fuel pressure gauge and adapter fitting and re-install the factory Allen plug.