90112-ZW1-003 Hex Bolt - Overview. The 90112-ZW1-003 Hex Bolt is a critical fastening component used in Honda marine engine systems. This bolt plays a vital role in securing various engine parts within the marine system, ensuring stable mechanical connections that support reliable engine operation. Designed to meet factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine OEM Honda hex bolt designed specifically for marine engine applications.. Hexagonal shape provides secure and tight fastening, reducing the risk of loosening under marine operating conditions.. Precisely manufactured to match Honda's original factory dimensions and tolerances.. Essential for mounting components that maintain the structural integrity of the engine's extension and gear case sections.. Ensures consistent mechanical stability and alignment within the marine engine system.. Seamlessly integrates with existing Honda ma