GAC Trumpchi Oxygen Sensor 1120004BAC0000 / 0258010050, direct replacement for original, stable and durable, lower fuel consumption.

When your GAC Trumpchi vehicle shows engine fault light, unstable idle, weak acceleration, or clearly rising fuel consumption, it usually means the oxygen sensor has aged or failed and cannot accurately monitor oxygen content in exhaust. In normal operation, this sensor reports oxygen content to the ECU in real time to help maintain optimal combustion efficiency, reduce fuel consumption, and lower emissions. This product is a replacement for 1120004BAC0000 (corresponding to 0258010050) OEM, fitting GAC Trumpchi GS4, GS5, GA6 and other models. During installation, ensure the car is cold, avoid scalding, and use a dedicated socket for tightening to prevent thread damage or loose installation.