17840-ZV7-000 Throttle Rod - Overview. The 17840-ZV7-000 Throttle Rod is an essential part of Honda marine engine systems, acting as the vital linkage in the throttle control system. This rod connects the throttle control lever to the engine throttle mechanism, effectively regulating engine speed and contributing to smooth acceleration and deceleration. Designed specifically for Honda marine engines, it ensures seamless integration with existing parts, maintaining optimal performance and durabil