Upstream+downstream For 2005-2006 Audi A4 Quattro 3.0l Oxygen O2 02 Sensor 2pcs

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Please check fitment notes & description for accurate information. 2005 Audi A4 3.0L2005-2006 Audi A4 Quattro 3.0L2004-2006 Porsche Cayenne 3.2L2006 Volkswagen Beetle 1.9L1999 Volkswagen Jetta 1.9L Oxygen Sensors Location: How do I know the O2 sensor is good or not? Check engine light on A reduction in fuel economy. Your catalytic converter fails unexpectedly Exhaust emissions reach undesirable levels. How to install the oxygen sensor? Step 1 - Some sensors are equipped with a heat shield that m...

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