🔧【Applications】: 2Pcs Upstream And 2Pcs Downstream Oxygen Sensor Replacement For Ford Crown Victoria V8 4.6L 2011 2010 2009 2008 2007 O2 Sensor 234-4373 234-4609 🔧【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. 🔧【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. 2Pcs Upstream And 2Pcs Downstream Oxygen Sensor Replacement For Ford Crown Victoria V8 4.6L 2011 2010 2009 2008 2007 O2 Sensor 234-4373 234-4609