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!
BONNEVILLE WITH 3.8L UNDERBODY CONVERTER ASSEMBLY BOLTS TO FRONT PIPE INCLUDES RESONATOR TEST GROUP 4GMXV03.8041 LEV1 ULEV OR 4GMXV03.8042 LEV LEV2 CA OR NY APPROVED - CARB COMPLIANT 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