DP Sensor OEM 4339559 | Excavator Hydraulic Differential Pressure Sensor

Description

This OEM 4339559559 differential pressure (DP) sensor is a critical hydraulic system monitoring device designed to protect excavator hydraulic components from damage caused by clogged or degraded oil filters. The sensor continuously monitors the pressure differential between the inlet and outlet sides of the hydraulic oil filter housing. When the filter becomes restricted with contaminants, differential pressure rises and the sensor sends an electrical signal to the machine’s control system, triggering a warning light or fault code on the instrument panel. The 4339559 features a robust mechanical design with vibration-resistant construction suitable for excavator mounting locations. It provides accurate pressure readings across a range of 0 to 0.6 MPa with durable electrical connectors that resist oil and heat exposure. Compatible with the same excavator models as OEM part 4339559. Direct bolt-on and plug-in replacement requires no calibration or adjustment. This new sensor delivers reliable performance from first installation, avoiding the uncertainty of used or rebuilt units. Essential for preventive maintenance programs on hydraulic excavator fleets to prevent costly pump and motor failures caused by filter bypass events.