Cummins 24V 12mm Studs

Build your 2003–2005 Ford 6.0L Powerstroke for performance and durability with the Powerstroke Products Loaded O-Ringed Cylinder Head with Heavy Duty Valve Springs. Designed to handle increased boost and aggressive tuning, this cylinder head features a machined O-ringed combustion surface to keep compression sealed in the cylinder and out of your cooling system—ideal for high-horsepower or towing applications. Each head begins with a brand-new casting, then is fully assembled with new valves, seals, and 100lb heavy-duty valve springs. The upgraded springs improve valvetrain control under pressure and RPM, helping you get the most out of your modified Powerstroke.