40105-ZX2-000AH Grommet Plug - Overview. The 40105-ZX2-000AH Grommet Plug is a crucial component within Honda marine engine systems, specifically supporting the engine rigging system. Its primary role is to provide a waterproof seal or stopper for engine outlets and rigging harnesses, preventing water intrusion and protecting internal components while maintaining the integrity of the rigging system. Designed to match factory specifications, it ensures seamless integration with existing parts, ma