Volkswagen Audi Front Oxygen Sensor 1K0998262L (0258017178), replaces DZAD precise air-fuel ratio

If your vehicle exhibits rough idle, sluggish acceleration, abnormally high fuel consumption, or engine fault light on, it is likely the front oxygen sensor aging or failure, causing inaccurate air-fuel ratio signals. This sensor continuously monitors exhaust oxygen content and feeds precise air-fuel ratio data to the ECU to optimize fuel injection and ignition, ensuring smooth engine power and compliant emissions. OEM number 1K0998262L (0258017178); fits various VW and Audi models, such as Passat, Jetta, A4L, etc. Installation requires a dedicated socket to avoid stripping threads; ensure connector is clean and locked securely to prevent signal interference.