14731-ZM7-013 Valve Lifter - Overview. The 14731-ZM7-013 Valve Lifter is an essential component within the Honda marine engine valve system. It plays a crucial role in the valve train, controlling the opening and closing of engine valves which regulate fuel intake and exhaust flow. Designed specifically for Honda marine engines, this valve lifter ensures reliable operation and longevity by maintaining precise valve movement and timing. With factory-matched dimensions and tolerances, it guarantee