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!
DEVILLE WITH 4.6L FWD CONVERTER WITHOUT RESONATOR TEST GROUP 2GMXV04.6065 LEV LEV1 OR 2GMXV04.6066 LEV LEV1 CA OR NY APPROVED - CARB EXECUTIVE ORDER D798-10 PER CARB REQUIREMENTS THE TEST GROUP SHOWN HERE MUST MATCH THE TEST GROUP OF YOUR VEHICLE. CALL FOR ASSISTANCE IF NEEDED (713)722-9212