90751-ZY9-000 Pin Spring (2.0x12) - Overview. The 90751-ZY9-000 Pin Spring (2.0x12) is a critical rigging hardware part designed for Honda marine engine systems. This 2.0mm diameter by 12mm long spring pin functions as a fastener that holds components securely together or provides necessary tension within mechanical assemblies. As an OEM part, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Pin Spring constructed to exact 2.0 x