This Revolutionary Speed Sensor 196-7973 1967973 125-2966 is brand new and fully compatible with E320B, E312B and E320C excavators. It precisely detects real-time revolution speed and position, delivering stable signals to ensure smooth engine and machine operation. Built with fine sensing components and rugged sealed housing, it works reliably in harsh construction site conditions. Made to OEM standards, it offers excellent fitment, quick response and long service life for daily equipment maintenance