A faulty Oxygen Sensor is a primary reason for Failure of a Catalytic Converter. Car Manufacturers Recommend Replacement of O2 Sensors at 60,000 miles. If you are purchasing a New Catalytic Converter be sure the Oxygen Sensors are Checked and Operating Correctly!
A6 WITH 2.8L FWD AND AUTOMATIC TRANSMISSION ONLY PASSENGER SIDE BANK 1 REAR UNDER BODY CONVERTER ASSEMBLY TEST GROUP 2ADXV02.8334 LEV LEV1 CA OR NY APPROVED - CARB EXECUTIVE ORDER D665-23
PER CARB REQUIREMENTS THE TEST GROUP SHOWN HERE MUST MATCH THE TEST GROUP OF YOUR VEHICLE. CALL FOR ASSISTANCE IF NEEDED (713)722-9212