Catalytic Converter Replacement - Left Side

Catalytic Converter Replacement - Left Side (LF1)

Removal Procedure
Warning: Refer to Hot Exhaust System Warning (Hot Exhaust System Warning).

Warning: Refer to Safety Glasses Warning (Safety Glasses Warning).


1. Disconnect the heated oxygen sensor before and after the left catalytic converter.




2. Remove the left catalytic converter nuts (1) to left cylinder head. Replace gasket (2) with a new one.




3. Remove the nuts (1) to the rear muffler assembly.
4. Remove the nuts (2) from the right catalytic converter.

Note: It may be easier to remove catalytic converter by removing the left cylinder studs.

5. Remove the exhaust bracket insulator (3) from the hanger and lower catalytic converter (5).
6. Carefully lower the catalytic converter to the floor.
7. Transfer oxygen sensors if replacing catalytic converter.

Installation Procedure





Caution: Refer to Fastener Caution (Fastener Caution).

Caution: To prevent damage to the exhaust manifold flange or stud, make sure the flange is fully seated before tightening.

Note: Replace the left catalytic to cylinder head nuts and gaskets with new ones.

1. Install the left catalytic converter nuts to the left cylinder head. Tighten nuts (1) in a criss-cross pattern.

* First Pass: 20 Nm (15 lb ft)
* Final Pass: 46 Nm (34 lb ft)




2. Attach left catalytic converter to insulator hanger bracket (3).
3. Install the left catalytic converter nuts (1) to the rear muffler assembly. Tighten to 46 Nm (34 lb ft).
4. Install nuts (2) to the right catalytic converter. Tighten to 46 Nm (34 lb ft).
5. Connect the heated oxygen sensor.

Note: Improperly installed and/or leaking exhaust manifold gaskets may affect vehicle emissions and/or On-Board Diagnostics (OBD) II system performance.

6. Inspect the exhaust system for leaks.