1 Lambda sensor upstream of catalyst for Audi A3 (8L)

For A3 (8L):
- S3 Quattro 210 hp (APY, AMK, AUL) up to 09/00 Sensor upstream (in front) of catalyst

Tip: to determine whether or not the excessive contamination of your vehicle is caused by the Lambda sensor(s), have your garagecarry out a diagnostic test.
Mechtechnic will not accept any returned sensors with signs of having been fitted. Thank you foryour understanding.