Throttle 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. Responsive Throttle Control - Delivers real-time input to the engine control module, allowing for precise fuel-air adjustments and consistent power.. Eliminates Hesitation & Power Loss - A worn sensor can cause erratic acceleration or rough idling-replacing it restores smooth performance.. OEM Precision Fit - Designed to meet Mercury's exact specifications for easy installation and dependable operation.. Durable, Marine-Grade Construction - Built to withstand constant exposure to moisture, vibration, and high engine temperatures.. Product Deta