| Parameter | Specification |
|---|---|
| OEM Number | 860126158 |
| Brand | XCMG (Original Equipment) |
| Sensor Type | NTC Thermistor (Negative Temperature Coefficient) |
| Resistance @ 25°C | 2.5 kΩ ±5% |
| Resistance @ 80°C | 320 Ω ±3% |
| Operating Temperature Range | -40°C to +130°C |
| Output Signal | Analog voltage (0.5V – 4.5V) |
| Connector Type | 2-pin Deutsch style, waterproof |
| Thread Size | M14 x 1.5 |
| Hexagon Size | 19 mm |
| Sealing Washer | Copper gasket included |
| Housing Material | Brass with nickel plating |
| Protection Class | IP67 |
| Applicable XCMG Graders | GR135, GR165, GR180, GR200, GR2003, GR215, GR260, GR300 |
The genuine 860126158 coolant temperature sensor utilizes a high-accuracy NTC thermistor element encapsulated in a thermally conductive epoxy. This design ensures rapid response to temperature changes (≤2 seconds) and drift less than 0.5% over 10,000 hours. The sensor directly interfaces with the grader’s engine control module (ECM), enabling closed-loop control of cooling fans, injection timing, and cold-start enrichment.
Unlike aftermarket sensors that often exhibit nonlinear resistance curves, the XCMG 860126158 follows a strictly calibrated R/T characteristic matching the factory ECU mapping. This eliminates false overheat warnings, inefficient fuel trim, and unnecessary derating. The brass housing resists galvanic corrosion even when using extended-life coolants, ensuring long-term reliability in mining and road construction environments.
OEM number 860126158 is the exact replacement for XCMG motor graders equipped with diesel engines (Cummins, Deutz, or XCMG branded). It supersedes earlier part numbers 860126157 and 612630100025. The M14x1.5 thread and integrated seal washer provide a leak-proof installation without additional sealant. Cross-compatible with some SDLG and SANY models, but always verify original sensor resistance at 25°C for perfect match.
For fleet standardization, the 860126158 sensor fits all XCMG grader series from 2008 onwards, including Tier 3 and Tier 4 emission compliant machines. The 2-pin Deutsch connector ensures plug-and-play connectivity with existing engine harnesses, reducing installation time by 50% compared to universal sensors that require splicing.
Accelerated life tests on the 860126158 sensor show 15,000 thermal cycles from -40°C to +125°C without signal degradation. The IP67-rated connector withstands high-pressure washing and salt spray exposure. In field trials on GR2003 graders, the sensor maintained ±1°C accuracy after 8,000 hours of operation, ensuring proper fan clutch engagement and preventing head gasket failures due to hidden overheating.
Engineers also validated the sensor’s vibration resistance according to ISO 16750-3 (random vibration, 5g RMS, 24 hours). The internal thermistor element is fully potted, eliminating contact bounce and intermittent signals. Choose genuine 860126158 to avoid false check-engine lights and unnecessary downtime.
Before installing the 860126158 coolant temperature sensor, drain coolant below the thermostat housing level. Clean the mounting boss threads and apply a small amount of anti-seize compound (copper-based) to the sensor threads, avoiding the thermistor tip. Torque to 15-20 Nm using a 19mm deep socket. Do not overtighten as it may crack the brass housing.
After installation, refill coolant and bleed air from the system. Start the engine and monitor the temperature gauge; it should rise smoothly. Use a diagnostic tool to compare the sensor reading with an infrared thermometer on the thermostat housing — deviation should be within ±3°C. Replace the sensor every 6,000 hours or during major cooling system overhaul.
Counterfeit sensors often use low-grade thermistors with loose tolerances (±10% at 25°C), causing erratic readings that confuse the ECU. This leads to incorrect fan operation, poor fuel economy, and potential engine overheating. Genuine 860126158 sensors are 100% tested with laser-trimmed resistors to meet the exact R/T curve stored in the XCMG ECM calibration. Each unit includes a lot traceable certificate.
Using OEM parts also preserves warranty coverage and ensures compatibility with XCMG electronic service tools. The sensor’s robust construction resists cracking from thermal shock, a common failure point in cheap copies. Invest in 860126158 for peace of mind and maximum engine protection.
Response time <2 seconds for real-time thermal management.
Waterproof connector and potting, resists pressure washing.
±1°C accuracy across -40°C to +130°C range.
The 860126158 sensor is also compatible with many diesel engines using a standard 2.5kΩ NTC thermistor (25°C). However, always compare resistance at 80°C (320Ω) to verify compatibility. Alternative aftermarket part numbers include 4921560, 3408420, but only genuine XCMG guarantees exact curve matching for your grader model.
When replacing a faulty sensor, also inspect the wiring harness for chafing or corrosion, as high resistance in the circuit can cause false readings. Use dielectric grease on the connector pins to prevent moisture ingress. Keep a spare 860126158 sensor in your field kit to minimize downtime during unexpected failures.
XCMG’s global parts network stocks the 860126158 coolant temperature sensor for immediate shipment. Each sensor is packaged in anti-static bubble wrap and includes a new copper sealing washer. Order using the buttons above to receive technical datasheets and bulk pricing for fleet orders.
For workshop manuals, the installation torque and diagnostic procedure are detailed in XCMG service bulletin SB-ENG-2024-05. Ensure your diagnostic scanner supports live data for coolant temperature; a stuck reading or erratic values often point to a failing sensor. Replace proactively every 6,000 hours to avoid cascading cooling system issues.
*All specifications based on XCMG original equipment standards. Always refer to your motor grader’s service manual before replacement. OEM number 860126158 is a registered XCMG component.
For inquiries regarding the 860126158 XCMG Coolant Temperature Sensor or other grader engine sensors, contact our parts specialists via the “Send Email” or “Inquiry Now” buttons above. We provide genuine parts, fast global logistics, and expert assistance to keep your fleet running at peak performance.
