90104-ZW1-900 Hex (10X80) Bolt - Overview. The 90104-ZW1-900 Hex (10X80) Bolt is a critical fastening component used within Honda marine engine systems. It supports the secure assembly of various engine parts, ensuring the stability and integrity essential for reliable marine operations. Designed to meet the specific requirements of Honda marine equipment, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. High-quality hexagonal bo