90001-ZW5-013 Bolt-washer (11x131) - Overview. The 90001-ZW5-013 Bolt-washer (11x131) is a crucial fastener designed for Honda marine engine systems. This part functions as a bolt combined with a washer to provide secure mounting and enhanced stability for various engine components. Engineered to meet original Honda factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Specialized bolt and washer combination me