17946-ZZ4-010 Throttle Cam - Overview. The 17946-ZZ4-010 throttle cam is a critical component in Honda marine engine systems. It controls the throttle mechanism which regulates engine power and speed, ensuring your marine engine runs smoothly and responsively. Designed to match factory specifications, this throttle cam integrates seamlessly with existing parts, maintaining optimal performance and durability essential for reliable boating experiences.. Key Features. OEM genuine Honda throttle cam