Upgrade your engine's performance with our brand new and fully loaded Cummins N14 Cylinder Head. Our castings are engineered, designed, and assembled in the U.S.A. and are better than OEM quality. With 5% more nickel content in the casting material, our cylinder head prevents cracking in between the valves. The coolant passages have been enlarged by 30%, and inner ribs have been reinforced to reduce heat stress. Don't risk buying an OE reman cylinder head that is bound to crack again. Upgrade with our Enhanced Performance Cylinder Head, featuring inconel valves that can endure higher temperatures and pressure. Get more out of your engine and enjoy peace of mind while hauling across the country! Oem Cross Reference # 3083981 3084058 3084981 3084992 3406738 3406739 3406742 3411780 3411813 3411817