811W25503-0275 Differential Sensor

811W25503-0275 is a dedicated differential sensor for heavy-duty trucks, mainly used to monitor the working status of the vehicle differential in real time. It collects key data such as differential speed, rotation speed, and working temperature, converts the mechanical signals into electrical signals and transmits them to the vehicle ECU (Electronic Control Unit). It helps the ECU adjust the differential working mode in time, prevents differential overheating, wear, jamming and other faults, ensures the stable operation of the vehicle's transmission system, improves driving stability and safety, and adapts to the harsh working conditions of heavy-duty trucks such as long-haul, heavy load, and complex road conditions.

Applicable Vehicles: SHACMAN X3000/F3000/M3000 series heavy-duty trucks, Sinotruk Howo T7H/T5G/C7H, FAW Jiefang J6P/JH6, MAN series heavy-duty trucks

Adaptable Systems: Vehicle differential system, transmission control system, vehicle ECU control system

OE Reference Number: 811W25503-0275

Interchangeable Number: 811W255030275, 3692548

Interchangeability: Direct replacement of original factory parts, perfect matching with the original vehicle interface, no additional modification of the differential system or wiring

Value-added Service: Support vehicle VIN code configuration verification, provide differential system matching advice, and technical guidance for sensor installation and debugging

Main Dimensions: 45±2mm×38±2mm×52±2mm (length×width×height)

Sensor Type: Hall effect sensor (high precision, fast response)

Rated Voltage: 24V DC (compatible with heavy-duty truck whole vehicle electrical system)

Output Signal: Analog signal (0-5V) / Digital signal (PWM), optional according to vehicle configuration

Measuring Range: Rotation speed: 0-3000r/min; Temperature: -40℃~150℃

Measurement Accuracy: Rotation speed: ±1% FS; Temperature: ±2℃

Response Time: ≤10ms (fast signal collection and transmission)

Waterproof Grade: IP67 (effective protection against rainwater, dust, and mud erosion)

Operating Temperature: -40℃~150℃ (adapts to extreme temperature of differential working environment)

Connection Type: 3-pin/4-pin waterproof connector (matches original vehicle interface)

Protection Level: Overvoltage protection, overcurrent protection, anti-interference protection

Core Materials: High-precision Hall element (sensor core), 304 stainless steel (sensing probe), engineering plastic PA66 (housing), high-temperature resistant silicone wire (wiring)

Surface Treatment: Sensing probe adopts anti-corrosion chrome plating treatment, housing uses high-temperature resistant, anti-aging spray coating, wiring uses wear-resistant, waterproof insulation sheath

Production Process: Precision machining (sensing probe), high-precision assembly (Hall element), waterproof sealing injection molding, signal accuracy calibration, high and low temperature aging test, 100% full-performance test before leaving the factory

Production Line Capacity: Self-owned professional molds, advanced production equipment, monthly output ≥ 30,000 units

Quality Grade: High-quality aftermarket parts, fully consistent with original factory technical standards, performance indicators and installation dimensions

Inspection Items: Signal accuracy test, temperature measurement test, rotation speed measurement test, waterproof test, vibration resistance test, overvoltage/overcurrent protection test, service life test

Quality System: IATF16949, ISO9001 international quality system certification

Batch Tracking: Support full batch traceability, each product is marked with unique batch number, production date and quality inspection code for quality tracking and after-sales tracing

Average Service Life: ≥ 4 years (or 400,000 kilometers of vehicle operation)

Performance Improvement: High-precision Hall element, stable signal output, no signal drift; 304 stainless steel probe, anti-corrosion, wear-resistant, long service life; IP67 waterproof grade, strong environmental adaptability; fast response speed, ensuring timely feedback of differential working status; anti-interference design, no signal distortion caused by vehicle electrical system interference

Harsh Environment Adaptation: Adaptable to -40℃ ultra-low temperature in northern China, no element failure or signal loss; resistant to 150℃ high temperature of differential operation, no housing deformation or wire aging; IP67 waterproof and dustproof, suitable for rainy, snowy, dusty working conditions in northwest desert, southern rainy areas and construction sites, no short circuit or signal failure

Common Fault Improvement: Solves the common problems of original differential sensors such as inaccurate signal measurement, signal drift, no signal output, poor waterproof performance, easy damage due to high temperature, and short service life

Maintenance Value: Direct plug-and-play replacement, no need to modify the differential system or debug the ECU, reducing maintenance time by 50%; high precision and reliability, timely early warning of differential faults, avoiding serious damage to the differential and transmission system, reducing maintenance costs and vehicle downtime loss

Packaging Configuration: Anti-static plastic bag + shock-proof EVA foam + thickened carton + moisture-proof desiccant + anti-collision partition (effectively prevent damage to the sensor probe and connector during transportation)

Outer Carton Marking: OE number, product name (Differential Sensor), applicable vehicle models, quantity, batch number, gross weight, net weight, storage and transportation precautions

Product Marking: Laser marking of OE number, rated voltage, sensor type, batch number, production date

Customization Service: Support neutral packaging, customer brand customized packaging, and customized connector type according to customer needs

Inventory Status: In-stock supply, sufficient inventory to meet urgent order needs of customers

Minimum Order Quantity (MOQ): 8 pieces

Delivery Cycle: 3 days for spot goods; 7-15 days for bulk customized orders

Supply Stability: Monthly output ≥ 30,000 pieces, stable production capacity throughout the year, perfect supply chain management, no delivery delay due to insufficient production capacity or raw material shortage

Certification Qualifications: IATF16949, ISO9001 certified, can provide third-party professional test reports (signal accuracy, waterproof performance, high and low temperature resistance, etc.)

Quality Guarantee Policy: 24-month quality warranty, 7-day free replacement and return for non-human damage (such as manufacturing defects, performance failure, signal inaccuracy)

Technical Support: 24-hour online technical response team, providing professional installation guidance, fault troubleshooting, signal debugging and after-sales technical consultation

Return and Exchange Policy: Accept return and replacement for non-human damage, the freight shall be borne by the supplier; provide fast after-sales processing, ensure customer rights and interests

Northern China: SHACMAN X3000 heavy-duty trucks operating in -35℃ low-temperature environment in Inner Mongolia, the differential sensor runs stably for 4.5 years, accurately monitors differential temperature and rotation speed, no signal failure, and effectively avoids differential overheating

Northwest China: Sinotruk Howo T7H operating in Gobi desert areas, with large dust, high temperature difference and severe vibration, the sensor resists dust, vibration and high temperature, service life exceeds 420,000 kilometers

Southeast Asia: MAN heavy-duty trucks operating in high-temperature and humid areas, IP67 waterproof grade effectively prevents rainwater and moisture erosion, signal output is stable, and the differential system operates normally

Installation: Before installation, check whether the sensor model and connector match the original vehicle; clean the installation interface of the differential to avoid debris affecting the sensing accuracy; plug the connector firmly, ensure waterproof sealing, and do not reverse the positive and negative poles of the wiring to avoid sensor damage.

Inspection: Every 30,000 kilometers, check the sensor wiring for looseness, wear and aging; check the probe for dirt, corrosion and damage; test the signal output to ensure accuracy and stability.

Storage: Store in a dry, ventilated and cool warehouse, avoid contact with oil, corrosive substances, water and high temperature; prevent extrusion, collision and heavy pressure, so as not to damage the probe and internal components.

Replacement: When the sensor has inaccurate signal measurement, no signal output, frequent signal drift, or damage to the probe/connector, replace the differential sensor in time to avoid failure of the differential system and affect driving safety.

Q1: Does it support vehicle configuration verification to ensure matching with my truck's differential system?

A1: Yes, we can verify the compatibility of the sensor with your truck's differential system and ECU according to the vehicle VIN code, and provide professional matching suggestions.

Q2: What is the measurement accuracy of this differential sensor?

A2: The rotation speed measurement accuracy is ±1% FS, and the temperature measurement accuracy is ±2℃, which fully meets the original factory technical standards and can accurately monitor the differential working status.

Q3: Can samples be provided for testing before formal ordering?

A3: Yes, we support sample supply, and the sample fee can be deducted from the subsequent formal order amount.

Q4: What should I do if the sensor has no signal output after installation?

A4: Our 24-hour online technical team can provide fault troubleshooting guidance, including checking the connector contact, wiring positive and negative poles, and ECU signal reception, to help you solve the problem quickly.

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