90215-HW1-671 Flange (6X16) Bolt - Overview. The 90215-HW1-671 flange (6X16) bolt is an essential fastener used in Honda marine engine systems. This precision bolt provides reliable fastening for various components, ensuring that your Honda marine equipment operates efficiently and safely. Engineered to match factory specifications, this bolt guarantees seamless integration with existing parts, maintaining optimal performance and structural integrity.. Key Features. High-quality flange bolt meas