Chevrolet Captiva Oxygen Sensor 55564978 0281004129 GM Original Replacement

If your Chevrolet Captiva shows abnormal fuel economy, rough idle, weak acceleration, or the engine warning light is on, the oxygen sensor may be aging or failing, causing air-fuel ratio imbalance. When functioning normally, the sensor monitors exhaust oxygen content in real time and feeds back to the ECU to precisely adjust fuel injection, ensuring combustion efficiency and emissions compliance. This universal OEM replacement is OEM 55564978 (Bosch 0281004129) for 2008-2015 Chevrolet Captiva 2.4L/3.2L models. Use a dedicated socket for installation to avoid wiring pulling or sensor thread damage; operation with a cold engine and applying anti-seize lubricant is recommended.