16800-ZY9-003 Water Separator - Overview. The 16800-ZY9-003 Water Separator is a crucial component in Honda marine engine systems. It is designed for the fuel system to effectively separate water from fuel, thus ensuring cleaner fuel delivery and enhancing engine reliability and performance. Specifically engineered for seamless integration, this water separator matches factory specifications, dimensions, and tolerances, providing optimal durability and function.. Key Features. Genuine OEM Honda part ensuring exact fit and function.. Filters out water and contaminants from fuel, protecting engine components.. Designed for Honda marine engine fuel systems, guaranteeing reliability.. Maintains proper fuel flow and prevents water-induced damage.. Precision manufactured to match factory dimensions and tolerances.. Integrates perfectly with existing fuel system hardware and seals.. Why Choose Genuine OEM. Using original Honda parts like the 16800-ZY9-003 Water Separator preserves the integri