Why does ATK have better than new quality?
Every head that ATK remanufactures is reverse engineered to ensure that any original factory defects are removed, saving you time and money and keeping your Jeep on the road and out of the shop.0L 6 cylinder engines;Head cast #0331;Complete with valves and springs;Core Charge Added till Core Returned;Head gasket sold separately;California Residents: WARNING ATK Cylinder Head (Natural) - 2A34 A sales rep will contact you when your order is received regarding the core charge and availability.. 4.