50209-ZY3-A00 Tube Clamp - Overview. The 50209-ZY3-A00 Tube Clamp is a genuine Honda marine engine component that supports the rigging and accessory systems by securely fastening critical tubing. This clamp plays a vital role in maintaining proper alignment and stability of fluid and air lines, which helps ensure the system operates reliably and efficiently. Engineered for a clean fit with existing hardware, it maintains peak performance and durability in demanding marine environments.. Key Feat