The 811W25503-0244 Pressure Switch is a high-quality replacement part designed for Sinotruk HOWO models A7, T7, T5G, SITRAK C7H, and MAN MCY13 trucks. This differential lock switch plays a critical role in ensuring the safe and efficient operation of your vehicle’s locking system by regulating hydraulic pressure accurately.
Technical Specifications
- Part Number: 811W25503-0244
- Compatible Models: Sinotruk HOWO A7, T7, T5G, SITRAK C7H, MAN MCY13
- Function: Differential lock pressure switch
- Material: High-grade metal and durable composite materials
- Operating Pressure Range: Standard OEM specification (consult vehicle manual)
- Connection Type: Standard hydraulic fittings compatible with Sinotruk systems
- Warranty: 12 months limited warranty
Installation Notes
- Ensure the vehicle is parked on a flat surface with the engine off before installation.
- Release hydraulic pressure from the system to avoid accidents.
- Locate the existing pressure switch on the differential lock hydraulic line.
- Disconnect the wiring harness and hydraulic connections carefully.
- Remove the old pressure switch and replace it with the new 811W25503-0244 switch.
- Reconnect the wiring and hydraulic lines securely to avoid leaks.
- Test the differential lock system for proper operation before driving.
- If unsure about installation, consult a professional mechanic or authorized service center.








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