16221-ZW1-000 Carburetor Gasket - Overview. The 16221-ZW1-000 Carburetor Gasket is an essential sealing component within Honda marine engine systems, specifically designed to provide a leak-free connection between the carburetor and engine block. This gasket supports the fuel system by sealing the mounting surface, thereby ensuring optimal air-fuel mixture flow and preventing fuel leaks. Carefully engineered for Honda outboard engines, it ensures seamless integration with existing parts, maintai