The Kohler 2541801-S Engine Speed Sensor monitors engine rotational speed to support accurate engine performance control. It detects the speed of rotating engine components and sends corresponding signals to the control system for monitoring and adjustment. This sensor helps maintain consistent engine operation, supports proper speed regulation, and assists in reliable equipment perfo... https://www.wholetoolbox.com/kohler-2541801-s-engine-speed-sensor/2541801-S.html