Located after the catalytic converter
For models with BGN engine code only - Fits left and right sides
Audi A4 Oxygen Sensors
Keep your engine running efficiently
10X Entries Into Our F80 M3 Sweepstakes
This product was last offered at the strikethrough price on
05-29-2026
Keep your engine running efficiently
For engine code ATQ, fits left and right position
Stainless steel weld-in nut for any O2 sensor
Tool comes with both 1/2" and 3/8" drive.
O2 Sensor Socket
Extra length is needed sometimes
Keep your engine running efficiently
Up to VIN 8D-W-007799, split is in the 1998 model year
This product was last offered at the strikethrough price on
05-07-2026
Keep your engine running efficiently
From VIN 8D-W-007800, split is in the 1998 model year
Restore fuel mileage and clear codes
We Price Match - Give Us A Call or Chat!
For cylinders 1-3
This product was last offered at the strikethrough price on
05-07-2026
Keep your engine running efficiently
This product was last offered at the strikethrough price on
05-07-2026
Keep your engine running efficiently
This product was last offered at the strikethrough price on
05-07-2026
Keep your engine running efficiently
Fits the left and right position
This product was last offered at the strikethrough price on
05-07-2026
Keep your engine running efficiently
For engine code ATQ, fits left and right position
This product was last offered at the strikethrough price on
05-07-2026
Direct OE-quality replacement heated oxygen sensor to restore proper engine management, cure stubborn Check Engine Lights, and ensure your vehicle passes its next emissions test.
Fits the left and right position