14820-PNA-013 Lost Motion - Overview. The 14820-PNA-013 Lost Motion is a specialized camshaft timing control mechanism integral to Honda marine engine systems. It supports the valvetrain system by ensuring precise operation of intake and exhaust valves, contributing to enhanced engine performance and efficiency. Engineered to meet Honda factory specifications, the Lost Motion component guarantees seamless integration with existing parts, maintaining optimal performance and durability.. Key Featu