90751-ZV5-000 Lock (6Mm) Pin - Overview. The 90751-ZV5-000 Lock (6Mm) Pin is a vital rigging component in Honda marine engine systems. It is a small, precise 6mm diameter metal pin that functions as a lock pin to securely fasten and maintain mechanical connections within the engine's rigging and accessory systems. As a genuine Honda part, it conforms to strict OEM factory specifications, ensuring seamless integration with the existing components and robust operation for reliable marine performan