This hydraulic oil sensor monitors the fluid level inside the tractor's hydraulic reservoir. It sends a signal to the cab display or control unit when the oil level drops below the operating threshold. The sensor mounts into the reservoir housing and is wired into the machine's electrical system. A failing sensor may give a false low-level warning or no warning at all, which can lead to pump cavitation if the operator does not notice a genuine low-oil condition. As an original AGCO component, the sensor body and sealing face are machined to match the housing bore geometry so that the O-ring seats correctly and no leakage occurs at the mounting point.