🔧【Applications】: Upstream 234-5137 x2 Downstream 234-4473 x2 Oxygen Sensor Replacement for 2003 2004 2005 BMW 325CI 325I 2.5L M54 Engine,2004 2005 330CI 330I 525I 530I X3 2.5L 3.0L 🔧【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 en sure 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. 🔧【Warranty】: 1-Year Unlimited Miles Warranty. If the oxygen sensor does not fit your vehicle, we accept return. Please make the item clean and package in good condition. MAXFAVOR 4Pcs Upstream & Downstream Oxygen Sensor Replacment for O2 Sensor BMW 525I 530I 2005 2004 2.5L 3.0L 234-5137 X2 234-4473 X2 02 Sensor
SPECIFICATION:
Brand New and High Quality Oxygen Sensor
Direct Plug-In Replacement
COMPATIBLE MODELS
Make Model Engine Year Notes
BMW 330CI L6-3.0 2006-2004 2X Upsteam & 2X Downstream
BMW 330CI L6-3.0 2003 From 03/03 ; 2X Upsteam & 2X Downstream
BMW 330I L6-3.0 2005-2004 2X Upsteam & 2X Downstream
BMW 330I L6-3.0 2003 From 03/03 ; 2X Upsteam & 2X Downstream