91559-ZV3-000 Handlebar Collar - Overview. The 91559-ZV3-000 Handlebar Collar is an essential component within Honda marine engine steering systems. It plays a crucial role in securing and aligning the handlebar assembly, which is vital for precise steering control and overall marine vessel operation. Designed to integrate seamlessly with existing hardware, this collar maintains the durability and reliable performance that Honda marine engines demand.. Key Features. Genuine OEM part specifically