90507-ZV1-000 Nylon (9mm) Washer - Overview. The 90507-ZV1-000 Nylon (9mm) Washer is a vital component within Honda marine engine systems. This washer is designed to serve as a durable, non-corrosive spacer and vibration dampener, ensuring reliable mounting and sealing in various assemblies. Crafted from high-quality nylon, it provides excellent insulation and corrosion resistance which is critical in harsh marine environments. It ensures seamless integration with existing parts, maintaining opt