The 6.0L Powerstroke at the heart of the 2004-2007 Super Duty came loaded with more than a few blind spots, some of which include its crippling EGR system, weak head studs, weak head gaskets, and inefficient fuel system. Luckily, Stage 3 can help your mighty Powerstroke work like a brand new truck with kits specifically designed to correct the problems found in the 6.0L Powerstroke. Also be sure to check out our selection of high-powered F250/F350 performance parts to complete your underhood transformation. Ford Super Duty Fitments: 2004, 2005, 2006, 2007 Ford F250 & F350 6.0L Submodel Fitments: FX4, King Ranch, Platinum, Lariat, XLT, XL Some Exceptions apply, please see individual product pages for specific fitments.