- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- NTK "1625" - Not available
BMW - 3, 5, 6, 1, 7; AUDI - A4, A6; VW - Golf, New Beetle; SKODA - Octavia; ALFA ROMEO - 156, 159; BENTLEY - Continental