90207-HW1-671 Flange (6X40) Bolt - Overview. The 90207-HW1-671 Flange (6X40) Bolt is a critical fastening component used in Honda marine engine systems. Designed specifically for Honda Active Marine products, this bolt ensures secure and reliable connection of various components, maintaining the operational integrity of your marine equipment. Engineered to exact factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Featu