The Yamaha 5UG837550100 Speed Sensor is a genuine OEM replacement component specifically designed for various Yamaha Grizzly and Rhino ATV/UTV models. This critical sensor is responsible for accurately measuring vehicle speed, which is essential for the proper functioning of the speedometer and other integrated vehicle systems. It provides a direct fit and reliable performance for models including the Grizzly 660 and 700, and Rhino 700, ensuring original equipment quality and durability.