90017-ZY9-000 Bolt-washer (5x30) - Overview. The 90017-ZY9-000 bolt-washer (5x30) is a genuine Honda OEM part designed specifically for Honda marine engine systems. It serves as a secure fastening solution, combining a bolt and washer to provide reliable mounting for various components within the marine engine assemblies. Manufactured to precise factory specifications, this bolt-washer ensures seamless integration with existing parts to maintain optimal performance and durability in demanding marine environments.. Key Features. OEM bolt-washer combination with 5mm diameter and 30mm length dimensions.. Crafted to meet exact Honda factory standards for fit, form, and function.. Designed for secure and stable fastenings within Honda marine engine systems.. Integrates cleanly with original hardware, ensuring proper sealing and mounting integrity.. Contributes to maintaining system performance by holding critical components firmly in place.. Durable construction tailored for marine environm