90601-ZVL-000 tube (d12.5) clamp - Overview. The 90601-ZVL-000 tube (d12.5) clamp is an essential component in Honda marine engine systems. It serves the critical role of securely fastening and supporting a tube with a diameter of 12.5mm, preventing unwanted movement and ensuring the stability of the engine's fluid and mechanical connections. Designed for seamless integration with the marine engine's rigging and accessories, this clamp maintains durability and optimal performance, matching the f