- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- FAE "77150" - Not available
VW - Golf, Bora, Passat, Polo, FOX; SEAT - Toledo, Leon; AUDI - A3, A4; SKODA - Fabia, Superb