24318-ZY3-000 Shift Rod Spring - Overview. The 24318-ZY3-000 Shift Rod Spring is a critical component within Honda marine engine systems that supports the shifting mechanism. This spring maintains the correct tension needed for the shift rod to function smoothly and reliably, providing consistent return action essential for proper gear engagement. Designed with precise dimensions and tolerances, it ensures seamless integration with existing parts, maintaining optimal performance and durability..