The 803753067 Temperature Sensor (2‑Wire) is a genuine OEM component manufactured by XCMG for heavy‑duty motor graders and construction equipment. This NTC thermistor‑based sensor provides precise temperature readings for engine coolant, transmission oil, or hydraulic fluid.
Engineered to endure extreme vibration, thermal cycling, and aggressive fluids, the 803753067 sensor features a rugged brass housing and a sealed two‑pin Deutsch connector. It directly replaces failed or inaccurate temperature sensors on XCMG GR series graders and compatible powertrains.
Each unit is factory‑calibrated to deliver a negative temperature coefficient (NTC) resistance curve, ensuring the engine ECU or instrument cluster receives accurate temperature data for proper fueling, cooling fan control, and warning lamp activation.
| Parameter | Specification |
|---|---|
| OEM Number | 803753067 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Temperature Sensor (2‑Wire NTC Thermistor) |
| Thread Size | 3/8″ NPT or 1/2″ NPT (tapered, universal fit) |
| Sensor Type | NTC thermistor (negative temperature coefficient) |
| Resistance at 25°C (77°F) | 2.5 kΩ ±5% |
| Resistance at 100°C (212°F) | 180 Ω ±5% |
| Resistance at -40°C (-40°F) | ≈ 45 kΩ |
| Accuracy | ±1.5°C (over -20 to +120°C range) |
| Response Time | < 5 seconds (in flowing liquid) |
| Operating Temperature Range | -40°C to +135°C |
| Media Compatibility | Engine coolant, transmission oil, hydraulic oil, diesel fuel |
| Maximum Pressure (static) | 150 psi (10 bar) |
| Connector Type | 2‑pin Deutsch DT04‑2P (sealed, IP67) |
| Housing Material | Brass with nickel plating + high‑temp plastic insulator |
| Sealing | Integrated O‑ring (Viton®) for thread sealing |
| IP Rating (mated) | IP67 |
| Vibration Resistance | 20g (10‑2000Hz) per ISO 16750‑3 |
| Thermal Shock | -40°C ↔ +125°C, 500 cycles |
| Compatible Models | XCMG GR135, GR165, GR215, GR300, GR350 motor graders; also fits loaders and rollers |
The XCMG 803753067 Temperature Sensor uses a high‑stability NTC thermistor encapsulated in a stainless‑steel or brass probe. As temperature rises, the resistance decreases non‑linearly. The engine or transmission control unit applies a reference voltage and calculates temperature from the voltage divider.
Accurate temperature data is vital for engine cooling fan control, fuel injection timing, transmission shift scheduling, and warning lamp activation. A faulty sensor can cause overcooling, overheating, or false alarms, leading to unnecessary downtime or engine damage.
The 803753067 provides fast thermal response (less than 5 seconds in liquid) and excellent long‑term stability (±1°C drift after 10,000 hours). This ensures your grader’s thermal management system operates precisely even in extreme ambient conditions.
The 803753067 sensor is a direct fit for XCMG motor graders that use a two‑wire NTC temperature sensor. It mounts into the cylinder head, thermostat housing, or transmission oil filter base. The thread is either 3/8″ NPT or 1/2″ NPT, but the sensor body is tapered to seal without sealant (though PTFE paste is recommended).
Installation: drain coolant or fluid to below the sensor port. Remove the old sensor, clean the threads, apply a small amount of thread sealant, and torque to 18‑22 Nm. Connect the two‑pin Deutsch connector (polarity insensitive). Refill fluid and check for leaks. No calibration required.
Common failure symptoms: temperature gauge reading erratic, always cold, always hot, or check engine light with codes P0115, P0116, P0117, or P0118. Replacing with genuine 803753067 resolves these issues and restores proper ECU functionality.
XCMG designs the 803753067 to survive the harshest environments. The brass housing is nickel‑plated to resist corrosion from coolant additives, salt spray, and acidic oil. The thermistor element is glass‑encapsulated and overmolded with high‑temperature epoxy, eliminating moisture ingress.
The sensor undergoes 100% factory testing: thermal shock from -40°C to +135°C for 500 cycles, vibration to 20g for 24 hours, and 1000 hours of salt spray (ASTM B117). Output resistance is verified at three temperature points (0°C, 25°C, 100°C) to ensure accuracy.
The integrated Viton® O‑ring provides a leak‑free seal even under thermal expansion and contraction. Unlike generic sensors that use cheap rubber, this OEM part will not harden or crack after years of service.
Aftermarket temperature sensors often have incorrect resistance curves (different beta values), causing the ECU to misread temperature by 10‑20°C. This leads to improper fuel enrichment, cooling fan running continuously, or transmission shift errors. The genuine XCMG sensor matches the original B‑constant (typically 3500K) exactly.
Counterfeit sensors may also use undersized thermistors that self‑heat, creating reading errors. The 803753067 is designed with a large thermal mass and low self‑heating current (< 1 mA) to ensure accurate passive measurement.
XCMG provides a 12‑month unlimited‑hour warranty. Each sensor is laser‑etched with the XCMG logo and part number. This supersedes older numbers 803752901, 803753045, and 803753115.
To test the 803753067 sensor, disconnect it and measure resistance across the two pins at known temperatures. Use a thermometer to verify actual temperature. Typical values: at 0°C (32°F) resistance ≈ 8.5 kΩ; at 25°C (77°F) ≈ 2.5 kΩ; at 80°C (176°F) ≈ 330 Ω; at 100°C (212°F) ≈ 180 Ω.
If resistance is open (infinite) or short (0Ω), replace the sensor. Also, if resistance does not change when heating the probe with a heat gun (carefully), the sensor is defective. Compare the measured resistance to the OEM specification table – deviation beyond ±10% indicates drift.
For fleet maintenance, keeping spare 803753067 sensors avoids costly downtime. A failed temperature sensor can prevent the engine from reaching operating temperature, increase fuel consumption, or cause transmission overheating. Be proactive and replace suspect sensors immediately.
The 803753067 2‑Wire Temperature Sensor is stocked in XCMG regional warehouses in North America (Houston), Europe (Rotterdam), Middle East (Dubai), and Asia (Shanghai). Standard air freight delivers within 3‑7 business days worldwide. Expedited shipping (1‑2 days) is available for urgent repairs.
Bulk orders (10+ units) receive volume discounts and can be shipped via sea freight. Each sensor is individually packaged in anti‑static bags with desiccant and full traceability labels. For large mining fleets, consignment stock programs are available.
Don’t gamble with aftermarket temperature sensors. Choose the genuine XCMG 803753067 for guaranteed fit, performance, and durability. Keep your motor grader running at optimal temperatures and avoid unnecessary engine or transmission wear.
Upgrading to a new OEM temperature sensor restores accurate temperature feedback, ensuring your grader’s cooling system, fuel management, and transmission controls work as designed. The 803753067 is the definitive replacement for any XCMG GR series motor grader produced after 2005.
Order the genuine XCMG 803753067 2‑Wire Temperature Sensor today and experience precision engineering that keeps your equipment productive in the toughest jobsites. Reliability, accuracy, and long life – all in one OEM component.
