90013-ZVD-000 Flange (6X12) Bolt - Overview. The 90013-ZVD-000 flange (6X12) bolt is a critical fastening component designed specifically for Honda marine engine systems. This bolt supports secure mounting and ensures mechanical integrity in various parts of the engine, contributing to the overall reliable operation of your marine equipment. Crafted to meet exact factory specifications, this OEM bolt integrates seamlessly with existing hardware, preserving optimal functionality and durability un