- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- Blue Print "ADK87020" - Not available
AUDI - A4, A3, TT, A6, A5; SUZUKI - Wagon R, Celerio; BMW - 3, 1; ALFA ROMEO - 156, 159; BENTLEY - Continental