🔧【Applications】Fit for VW 1999-2001 Beetle Golf Jetta 2.0L for AEG Engine, 2000-2002 Cabrio 2.0L, 2000 2001 Golf Jetta 1.8L for AWD Engine, 2000 2001 Passat 1.8L for ATW Engine, for Audi 2000 A4 1.8L, 2000-2001 TT 1.8L for ATC Engine. 🔧【Advantage】Made of high-quality materials,strong durability,to ensure service life,oxygen sensor can improve engine performance and fuel economy,extend catalytic converter life. 🔧【Cautions】Pls carefully check your vehicle year & make & model with the fitment of Amazon and our description.Pls compare your part with our pictures, it must be completely same.If you have any questions, please email us, we try to answer all email within 24 hours. 🔧【Installation】STEP1. Locate the oxygen sensor position and remove it with socket, STEP2. Compare the new sensor to the old sensor to ensure a proper installation, STEP3. Please clean the threaded port to ensure a proper seal of the new sensor,STEP4.Gently tighten the sensor in order to keep wire free from damage and avoid sensor leakage, STEP5,Reinstail the connecor,try to clear it if the car has diagnostic trouble codes. 🔧【Buy With Confidence】If the oxygen sensor does not fit your vehicle, we accept return. Please make the item clean and package in good condition. Maxfavor 1Pc Upstream O2 Oxygen Sensor Fit for VW 1999-2001 Beetle Golf Jetta 2.0L for AEG Engine,2000-2002 Cabrio 2.0L,2000 2001 Golf Jetta 1.8L AWD Engine,2000 2001 Passat 1.8L ATW Engine 234-4874