BMW 740 Oxygen Sensor 11787577666 0258010031, 7-series exclusive replacement part stable output

When your BMW 7 Series 740 shows rough idle, obvious fuel consumption increase, or engine check light on, oxygen sensor aging may be the cause. This sensor operates to monitor exhaust oxygen in real time and feed to the ECU to ensure complete combustion and emissions compliance. This is the OEM replacement for BMW OEM number 11787577666 (corresponding to 0258010031), perfectly fitting BMW 7 Series (e.g., 740Li, 750Li). Use a dedicated socket during installation to avoid damaging threads; ensure sensor harness does not contact high-temperature exhaust.