17371-ZVA-000 Muffler Case - Overview. The 17371-ZVA-000 Muffler Case is a critical component of Honda marine engine systems. It houses and safeguards the muffler assembly, responsible for reducing exhaust noise and managing exhaust gas flow efficiently. This part is vital for maintaining engine performance and ensuring quiet, reliable operation. Engineered to meet factory specifications, the muffler case fits seamlessly with other engine components, ensuring optimal durability and a precise fit