90151-ZZ0-M00 Flange (8X25) Bolt - Overview. The 90151-ZZ0-M00 Flange (8X25) Bolt is a vital component supporting Honda marine engine systems. This specific flange bolt, measuring 8mm by 25mm, plays a crucial role in securing engine parts with precision and reliability. Manufactured to meet Honda's strict OEM specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine Honda flange bolt designed with exact dimensions