90111-ZY3-000 Bolt Special (6X17) - Overview. The 90111-ZY3-000 Bolt Special (6X17) is a precision-engineered fastener designed specifically for Honda marine engine systems. This special bolt plays a critical role in secure mounting and assembly of engine components, ensuring system reliability and operational integrity. Crafted to match factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Special (6x17) dimen