Get replacement and upgraded hardware with Head Studs & Fasteners that you need to hold the engine together in your 2003-2007 Ford 6.0L Powerstroke. Head Studs and Fasteners are available for high-performance applications with increased power outputs, as well as OE-style replacements that are engineered to maintain the factory function. Upgraded fasteners and head studs are engineered to handle the increased power of your engine with performance components. At XDP, you can find high-quality manufacturers like ARP, Fluidampr, and more who produce head studs, head bolts, flex plate bolts, fuel injector hold down bolts, and more.