3.7L/4.7L Engine

CAUTION: When servicing or replacing exhaust system components, disconnect the oxygen sensor connector(s). Allowing the exhaust to hang by the oxygen sensor wires will damage the harness and/or sensor.

Make sure the catalytic converter pipe is free of burrs.
Insert the catalytic converter into the exhaust pipe.
Make sure the alignment tang is fully seated in the alignment slot.
If other sections of the exhaust system where loosened in removal, refer to that information for the tightening procedures.
At the catalytic converter-to-extension pipe connection, install the clamp and nuts. Tighten the clamp nuts to 41 N.m (30 ft. lbs.) torque.
Lower the vehicle.
Start the engine, inspect for exhaust leaks. Repair exhaust leaks as necessary.
Check the exhaust system for contact with the body panels. Make the necessary adjustments, if necessary.