90003-ZX2-000 Flange (5x20) Bolt - Overview. The 90003-ZX2-000 flange (5x20) bolt is a crucial component within Honda marine engine systems. It serves as a secure mounting bolt designed to fasten critical parts in Honda's marine engines reliably. Manufactured to meet exact factory specifications, this bolt ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Precise 5mm x 20mm flange bolt designed for Honda marine applications.. Genuine