- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- FREY "880612801" - Not available
BMW - 5, 6, 3, 7 (E65, E66, E67), 1; AUDI - A4, A3; ALFA ROMEO - 156, Spider; CITROËN - C5, C4