90117-ZY3-000 Bolt (3/8-24unf) - Overview. The 90117-ZY3-000 Bolt (3/8-24UNF) is a crucial fastener designed for Honda marine engine systems. It plays an essential role in securing components and maintaining structural integrity within various assemblies. Engineered to meet precise factory specifications, this bolt ensures seamless integration with existing parts, maintaining optimal performance and durability throughout the life of your marine engine.. Key Features. Precisely sized 3/8-24 UNF t