50512-ZV1-000 Reverse Lock Hook - Overview. The 50512-ZV1-000 Reverse Lock Hook is a critical component within the Honda marine engine steering and shifting systems. Designed specifically for use in the reverse gear mechanism, this hook secures the reverse lock, preventing unintended engagement or disengagement of reverse gear. Manufactured to meet exact Honda factory specifications, this hook ensures seamless integration with existing parts, maintaining optimal performance and durability in Hon