90201-ZW9-000 Nut Lock (24mm) - Overview. The 90201-ZW9-000 Nut Lock (24mm) is a crucial fastening component designed specifically for Honda marine engine systems. It ensures a secure and vibration-resistant connection for various parts within the marine engine assembly, supporting the overall reliability and performance of the vessel. Engineered to meet precise factory specifications, this lock nut integrates seamlessly with existing hardware, maintaining both optimal function and durable opera