17937-ZV5-000 Throttle Opener Cam - Overview. The 17937-ZV5-000 Throttle Opener Cam is an essential component in Honda marine engine systems. It mechanically links and adjusts the throttle linkage to ensure precise throttle control and smooth engine performance. Designed for seamless integration with the throttle system, it ensures optimal engine response and fuel efficiency, maintaining reliable operation in marine environments.. Key Features. Genuine OEM throttle opener cam specifically engine