35495-ZV5-821 Throttle Switch - Overview. The 35495-ZV5-821 Throttle Switch is a vital component designed for Honda marine engine systems. It functions within the throttle control system to detect and transmit throttle position signals to the engine control unit, ensuring smooth acceleration and deceleration. Engineered for durability and reliable operation, it plays a critical role in maintaining precise engine response and overall vessel performance. Built to match exact factory standards, it