17936-ZVA-000 Plain (6mm) Washer - Overview. The 17936-ZVA-000 Plain (6mm) Washer is a crucial hardware component in Honda marine engine systems. This simple, flat metal washer supports mechanical assemblies by evenly distributing load and preventing damage to mating surfaces. Specifically designed for marine applications, it ensures the reliability and longevity of your equipment by maintaining proper assembly tension and alignment. Engineered to Honda's strict OEM standards, this washer guaran