90011-ZY3-000 Bolt Hex (12X65) - Overview. The 90011-ZY3-000 Bolt Hex (12X65) is a high-quality fastening component specifically designed to support Honda marine engine systems. This OEM hex bolt measures 12mm in diameter and 65mm in length, crafted precisely to match factory specifications. Its primary role is to provide secure and reliable mounting within the engine assembly, contributing to optimal mechanical stability and performance. Engineered to fit seamlessly with existing hardware and h