90003-ZY9-M00 Flange (6X22) Bolt - Overview. The 90003-ZY9-M00 flange (6X22) bolt is a crucial component for Honda marine engine systems. This bolt supports the secure assembly of various engine components, playing a vital role in keeping the engine operating reliably. Designed to meet OEM specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. This is a flange bolt sized 6x22, specifically engineered for Honda marine sy