1 Lambda sensor upstreamof catalyst for Audi A3 (8L) from 09/00 ->

For A3 (8L):
- S3 Quattro 210hp (APY, AMK, AUL) from 09/2000 ->04/2002 Sensor upstream (in front) of catalyst

Tip: to determine whether or not the excessivecontamination of your vehicle is caused by the Lambda sensor(s), haveyour garage carry outa diagnostic test.
Mechtechnic will not accept any returned sensors with signs of having been fitted. Thank you for your understanding.