90164-ZW4-010 Flange (10X90) Bolt - Overview. The 90164-ZW4-010 flange (10x90) bolt is an essential component designed specifically for Honda marine engine systems. This bolt plays a critical role in securely fastening various engine parts, ensuring the integrity and reliable operation of the marine power system. Manufactured to meet exact factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. This is a genuine