14430-ZY9-000 Inner Vlv Rocker Arm - Overview. The 14430-ZY9-000 Inner Vlv Rocker Arm is a vital component within Honda marine engine systems. It plays an essential role in the valve train system, controlling the opening and closing of intake valves to ensure optimal combustion and engine performance. Designed and manufactured to meet Honda's factory specifications, this rocker arm ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. OE