Oxygen, Lambda Sensor Exhaust Oxygen Sensor (O2 Sensor) Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture LEMARK "LLB1130" - Not availableBMW - 3 (E91, E92, F30), 5 (E39, WB), 4 (F32, F33, F82), X5, X3, 6, X6, 1, X1