90013-Zy3-000 Hex (10X85) Bolt - Overview. The 90013-ZY3-000 Hex (10X85) Bolt is a critical fastening component designed for Honda marine engine systems. Its primary role is to secure various engine parts reliably, ensuring that the mechanical assembly remains stable under operational stresses. Manufactured to factory standards, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. This hex bolt has dimensions of 10mm head diameter by