17933-ZV4-000 Throttle Rod Holder - Overview. The 17933-ZV4-000 Throttle Rod Holder is an essential component in the throttle control system of Honda marine engines. It supports the rigging system that manages the throttle rod's proper positioning and ensures smooth, reliable control of engine speed. By securely holding the throttle rod, this OEM part contributes to maintaining consistent engine performance and operational safety. Designed to integrate seamlessly with the throttle system, it mai