90039-ZVL-010 Flange (10X40) Bolt - Overview. The 90039-ZVL-010 Flange (10X40) Bolt is an essential component in Honda marine engine systems, primarily supporting the rigging and accessories system. This bolt plays a crucial role in securing various engine and marine parts together to ensure reliable mechanical connections and optimal operational stability. Specifically designed for Honda Marine Active Series engines, it maintains robust attachment of components, helping to deliver consistent en