Replacement HPOP Kit - The high pressure oil pump upgrade kit HPOP is designed to replace the problematic snap to connect STC fittings on your 6.0L Powerstroke diesel. This kit includes all the necessary pieces to replace the faulty factory parts that cause difficult or no start engine conditions. Includes all necessary parts for install and updates your Powerstroke to the latest oil pump revision. This is a complete high pressure oil pump kit HPOP and includes all necessary gaskets, seals, hardware, fittings, and f-fitting for installation. The STC HPOP kit fits 6.0L Powerstroke diesel trucks including the F250, F350, F450, and F550 from model years 2004.5, 2005, 2006, 2007. OEM Fit, Quality, and Finish.