- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- Delphi "ES21127-12B1" - Not available
FIAT - Ducato, Bravo, Grande Punto, Croma, Stilo; LANCIA - Delta, Musa; BMW - 3, 5; CITROËN - Jumper, C5