- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- Blue Print "ADM57050" - Not available
BMW - 3, 5, 1, 6, 7; AUDI - A4, A3; MAZDA - 3; ALFA ROMEO - 156, 159; CHEVROLET - Aveo, Captiva