6.7L Power Stroke O-Ringed Cylinder Heads

The KDD O-Ringed 6.7L Power Stroke Cylinder Heads are built for customers prioritizing reliability and robust head gasket sealing, all while preserving factory airflow characteristics. Each set begins as a brand-new, unused Ford OEM casting, which Kill Devil Diesel then meticulously machines and assembles in-house using precision processes. This approach ensures consistent quality and longevity, eliminating the uncertainties often found with remanufactured heads. These cylinder heads feature a precision O-ring sealing process implemented by Kill Devil Diesel to enhance head gasket sealing and minimize the risk of combustion leakage, particularly under elevated cylinder pressures. This upgrade is highly beneficial for tuned trucks, those with mild turbo upgrades, heavy towing applications, or for owners aiming to prevent repeat head gasket failures. The O-ring modification boosts sealing capabilities without impacting serviceability or street manners. All factory components, including intake manifolds, valve covers, and accessories, will fit and install as intended. Key features include brand-new OEM Ford 6.7L Power Stroke castings, KDD's precision machining and assembly, O-ringed decks, CNC-machined valve seat profiles, heavy-duty performance valve springs, and factory port geometry. They are ideal for stock or lightly modified daily drivers, towing and work trucks, and applications with mild tuning or turbo upgrades. Kill Devil Diesel offers these cylinder heads with a 12-month warranty against defects in materials and workmanship. They are available for 2011-2019 and 2020+ model years, with pricing potentially varying by selection.