90127-ZV4-000 Hex (6X16) Bolt - Overview. The 90127-ZV4-000 Hex (6X16) Bolt is a critical component designed to support the structural integrity of Honda marine engine systems. This hexagonal bolt plays a key role in securely fastening various engine components, ensuring reliable mechanical connections vital for engine operation. Precision-engineered to Honda's exact specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features