- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- FEBI Bilstein "175901" - Not available
VW - Polo, FOX, Passat, Golf, Bora; SKODA - Fabia, Roomster; SEAT - Ibiza, Cordoba; AUDI - A4, A6