90051-ZZ5-M00 Flange (8X18) Bolt - Overview. The 90051-ZZ5-M00 flange (8X18) bolt is an essential component in Honda marine engine systems. This bolt plays a crucial role in securely fastening engine components, ensuring system stability and reliability during operation. Engineered to meet exact OEM specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. High-quality flange bolt measuring 8mm in diameter by 18mm in lengt