MacIvey's Pair of New Cylinder Heads for the Ford 6.7L Power Stroke diesel (model years 2012–2019, build date after 1/21/12) delivers unmatched durability and simplicity for fleet operators, truck owners, and repair shops. Each pair is machined in their US facility with three decades of expertise, ensuring perfect OEM-level fitment on all late 6.7L Super Duty applications. Distinctive orange glow plug insulators safeguard against part confusion and ensure the correct head for your truck. Upgraded Manton conical valve springs, as well as new valves, and seals provide premium valvetrain reliability, while precision-machined new castings eliminate the hassle of core charges or questionable reman parts. These heads arrive fully assembled and ready to install out of the box—just bolt on and go! Every set is covered by MacIvey’s 1-year unlimited mileage warranty.