- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- NTK "7949" - Not available
AUDI - A4, A6, TT, A8, A3; VW - Golf, Passat; SEAT - Ibiza, Cordoba; SKODA - Octavia, Superb