16919-ZY3-003 Plate - Overview. The 16919-ZY3-003 Plate is a fundamental part of Honda marine engine systems, specifically supporting the fuel system. This plate serves as a structural mounting element ensuring reliable and efficient operation of the engine by securely holding and sealing fuel system components. Designed with precision to Honda's exact factory specifications, it integrates seamlessly with existing hardware and seals, contributing to the marine engine's consistent performance and