17374-ZW5-000 Muffler Grommet - Overview. The 17374-ZW5-000 Muffler Grommet is a critical rubber component used in Honda marine engine systems, specifically tailored for supporting the exhaust system. Its primary role is to isolate and absorb vibration between the muffler and its mounting point. This isolation helps to reduce noise transmission and prevent potential damage due to movement or harsh vibration, ensuring reliable and long-lasting engine operation. Designed to integrate seamlessly wi