- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- Topran "721 861" - Not available
CITROËN - Xsara, C3, Saxo, C2, Nemo; PEUGEOT - 206, Partner; AUDI - A6, A4; CHRYSLER - Sebring, Stratus