Mercury - Throttle Position Sensor for MCM and Vazer Engines - 8M0125617Throttle response can make or break your time on the water. A sluggish engine, rough idle, or inconsistent power delivery often points to a failing throttle position sensor. The Mercury Throttle Position Sensor (8M0125617) is designed to restore seamless acceleration and optimal fuel air balance in MCM and Vazer engines, ensuring smooth transitions and reliable performance every time you hit the throttle. Optimized for Performance & Reliability