90018-ZY6-000 Hex (12X70) Bolt - Overview. The 90018-ZY6-000 Hex (12X70) Bolt is an essential fastener used in Honda marine engine systems. This bolt plays a critical role in securing various components within the engine, providing strength and stability to maintain reliable operation. Manufactured to the highest standards, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine Honda OEM hex bolt with dimensions 12x70 mm.. Prec