8980274560 Original Excavator Oil Sensor for ISUZU 6WG1 ENGINE

The original oil sensor part number 8980274560 (also written as 89800-7341 or 499000-7341) is the core monitoring component of the lubrication system for the ISUZU 6WG1 diesel engine (displacement 15.7L, power 235-345kW). This sensor is mainly suitable for large excavators from brands such as Hitachi, Sumitomo, and Sany that are equipped with 6WG1 engines, such as Hitachi ZX450-3、ZX470H-3、ZX470LCH-3BE、ZX470LCH-5G、ZX490LCH-5A、ZX600、ZX850、ZX870-5G， And models such as Sumitomo SH480HD-6, SH700LHD-5B, Sany SY485H, SY750H, etc. Its common models are often labeled as 6WG1, 6WG1T, 6WG1X series, which belong to the oil pressure sensor and are usually installed near the engine main oil passage or oil filter base.

This product is an original oil pressure sensor that uses high-precision diaphragm sensing technology to sense real-time changes in oil pressure within the lubrication system (typical working pressure range 0-10 bar), and transmit 4-20mA or 0-5V analog signals to the instrument panel or engine control unit (ECU). It adopts high temperature resistant and oil resistant pressure sensitive components and sealing structure inside, which is not easy to drift readings after long-term use. As an original component, its thread specifications (usually M10 × 1.0 or M12 × 1.5), electrical interfaces (2-pin or 3-pin plugs), and output characteristics are strictly matched with the lubrication system and electronic control unit of the 6WG1 engine, ensuring precise monitoring and long service life under high pressure, high vibration, and high temperature (up to 150 ℃) conditions.

Suggest checking the sensor harness plug for looseness and oxidation every 500 working hours; Check for oil stains, leaks or physical damage on the shell; Is the dashboard oil pressure warning light abnormal. Fault diagnosis: If the oil pressure warning light is constantly on but the actual oil pressure is normal, or if the engine power is limited or there is abnormal noise, a multimeter can be used to measure the sensor resistance (normally about 100-1000 Ω) and output voltage (about 0.5-4.5V at idle as the oil pressure changes) for judgment. Key points for replacement: Stop the machine and drain the oil before replacement; Use a dedicated sleeve during disassembly to avoid damaging the shell; Apply a small amount of sealant to the threaded part before installing the new sensor, and tighten it with a torque of 20-30N · m; After installation, it is necessary to clear the ECU fault code and start the engine to verify that the instrument display is normal. Preventive maintenance: It is recommended to check or replace sensors during engine overhaul every 8000-10000 hours, and always use original parts to ensure monitoring accuracy and system compatibility.