16406-ZVP-000 Throttle Body Guard - Overview. The 16406-ZVP-000 Throttle Body Guard is an essential protective component designed for Honda marine engine systems. It shields the throttle body from debris and potential damage, ensuring reliable performance and longevity of your engine. Crafted to integrate seamlessly with existing components, this guard maintains optimal function and durability by preserving factory specifications and fit.. Key Features. Designed to protect the throttle body of H