Upgrade the HPOP fitting in your 2004.5-2007 Ford 6.0L Powerstroke with the XDP STC HPOP Fitting Update Kit XD269. The factory Snap-To-Connect (STC) Fitting that connects to the High Pressure Oil Pump (HPOP) is known to leak and in some cases completely separate. These leaks commonly cause hard starts, stalling, and many other driveability issues. Serving as both preventative maintenance and an upgrade, this kit includes all the components needed for installation. The XDP STC HPOP Fitting Update Kit XD269 is an excellent add-on to any repair where the High Pressure Oil Pump is exposed.