- Oxygen, Lambda Sensor
- Exhaust Oxygen Sensor (O2 Sensor)
- Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture
- NGK "1721" - Not available
SEAT - Ibiza, Cordoba; SKODA - Fabia, Roomster; VW - Polo; ALFA ROMEO - 159, 156; AUDI - A3, A1
Additional numbers
NGK:
OZA629-V4