90508-ZV5-000 Washer (17mm) - Overview. The 90508-ZV5-000 Washer (17mm) is a crucial component designed to support the propeller mounting system in Honda marine engine systems. This washer plays a vital role in securing propeller nuts and fasteners, ensuring smooth and reliable operation by maintaining proper spacing and preventing loosening due to vibrations. Manufactured as a genuine OEM Honda part, it ensures seamless integration with existing parts, maintaining optimal performance and durabi