14451-881-000 Vlv Rkarm Shaft - Overview. The 14451-881-000 Vlv Rkarm Shaft is an essential OEM component in Honda marine engine valve train systems. As a rocker arm shaft, it plays a key role in the mechanical linkage that controls the opening and closing of the engine's intake and exhaust valves, ensuring efficient airflow and combustion within the engine. Crafted to meet Honda's exacting factory specifications, the part guarantees seamless integration with existing parts, maintaining optimal