- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- Delphi "ES20117-12B1" - Not available
BMW - 3, 5, 1, 4, 2; AUDI - A4, A3; CHEVROLET - Trailblazer; ISUZU - Ascender; ALFA ROMEO - 159, 156; BENTLEY - Continental