- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- NGK "0391" - Not available
AUDI - A4, A6, TT, A3, A8; VW - Passat; SEAT - Ibiza, Leon; SKODA - Octavia, Superb
Additional numbers
NGK:
OZA659-EE17