Oxygen, Lambda Sensor Exhaust Oxygen Sensor (O2 Sensor) Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture Fispa "90610" - Not availableBMW - 3, 5 (F90, G30), X3, 6 Gran Turismo, X4, 7 (G11, G12), 1, 4, 2, X5