BMW Oxygen Sensor 11787569968 0258006977/0258010422, dual numbers compatible with multiple models

For BMW 3 Series, 5 Series, X3 with N-series engines, oxygen sensor 11787569968, also compatible with 0258006977 and 0258010422. Core function is to monitor exhaust oxygen concentration in real time and feed back to ECU to adjust air–fuel ratio for complete combustion. After installation, typically eliminates MIL (malfunction indicator lamp), improves idle stability and sudden fuel consumption increase. This sensor is highly versatile and effectively addresses signal drift due to aging.