Chevrolet 1.4L 1.6L Oxygen Sensor 25015107 OEM Match

When Chevrolet 1.4L or 1.6L engines show idle instability, higher fuel consumption, or emissions exceedances or check engine light on, oxygen sensor aging likely. The sensor returns real-time feedback of air-fuel ratio to ECU to maintain optimal combustion efficiency, power output, and emission standards. OEM 25015107 (compatible 25105901); fits 1.4L and 1.6L Chevrolets. Use dedicated socket to remove old sensor; apply anti-seize on threads; tighten to standard torque to prevent leaks or looseness.