- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- NGK "90100" - Not available
CITROËN - Xsara, ZX, Xantia, Saxo, AX; PEUGEOT - 106, 306; FIAT - Punto, Panda; FORD - Sierra, Escort