Electric Air Pressure Sensor WG9727710002 Sinotruk Sitrak

Product Introduction

This Electric Air Pressure Sensor WG9727710002 is an OEM core monitoring component for the air brake system of Sinotruk heavy-duty trucks (e.g., Howo, Sitrak series). It features a precision-machined stainless steel pressure-sensing body with standard metric threads, a high-sealing black waterproof electrical connector, and laser-engraved part number identification. Engineered to accurately monitor the real-time pressure of the truck’s air reservoir and brake circuits, it is manufactured in strict accordance with Sinotruk OEM standards to ensure stable signal output under extreme conditions of high vibration, low temperature, and air pressure fluctuations in commercial vehicle operation.

Core Function

1. Precision Air Pressure Monitoring: Accurately detects the pressure values of the truck’s primary and secondary air reservoirs, and transmits real-time analog or digital signals to the instrument cluster and ECU.

2. Brake System Safety Warning: Triggers the low air pressure warning light and buzzer on the dashboard when the air pressure is lower than the safe threshold (typically 0.45MPa), preventing brake failure caused by insufficient air pressure.

3. Durable Sealing Performance: The integrated high-temperature resistant rubber sealing ring and precision thread fit ensure zero air leakage; the fully sealed connector effectively prevents moisture and dust from entering the internal circuit.

4. Wide Temperature Adaptability: The internal sensing chip and circuit board are protected by epoxy resin potting, adapting to the extreme temperature range of -40℃~85℃, and ensuring no signal drift in cold northern regions or high-temperature engine compartments.

5. OEM Plug-and-Play Compatibility: Strictly follows the original vehicle’s thread size, pin definition, and mounting torque requirements, achieving 100% interchangeability with the original sensor, and supporting direct replacement without calibration.