||Without heavy duty emissions. Exhaust pipe packing not included. With machined valve reliefs and circlip grooves. Exhaust valve stem seals not included. Hypereutectic. Includes 5/8" inlet oil pump. Includes A-Series aluminum bearings. Includes H423ACP piston. PermaDry molded rubber valve cover and oil pan gaskets included. Premium valve stem seals included. With oil pump and freeze plugs.