ARP heads studs for 03-07 6.0 PowerStroke: ARP part # 250-4202 application chart: Make FORD Powerstroke Diesel Engine Type V8 Liter 6.0 CID 363 Engine Size 6.0L/363 Fits Ford 6.0L Powerstroke Years 2003, 2004, 2005, 2006, 2007 Engine Family Powerstroke diesel Cylinder Head Style (application) Stock configuration It is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there’s not a better stud setup on the market today. For openers, ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Then, each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best. To overcome head gasket failure in your Ford 6.0L Powerstroke diesel, ARP offers extra heavy-duty head studs 250-4202 Free delivery and tax included !