- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- FEBI Bilstein "21153" - Not available
BMW - 3, 5, 7, 8; PEUGEOT - 306, 405; CITROËN - XM, ZX; FIAT - Punto, Ducato; MERCEDES-BENZ - E-Class, 124