53108-ZW4-H01 Grommet - Overview. The 53108-ZW4-H01 Grommet is a vital rubber sealing component used within Honda marine engine rigging systems. Its primary role is to provide a secure, airtight seal that prevents water and contaminants from penetrating hose connections and wiring harnesses, thereby maintaining optimal system reliability and performance. Designed to fit precisely to factory specifications, this grommet assures seamless integration with existing hardware and protects critical com