1. Disconnect the battery negative cable from the battery. Refer to Battery Cable in Engine Electrical.



2. Remove the oil level indicator and tube from the engine block. Refer to Oil Level Indicator and Tube Replacement in Engine Mechancial.



3. Remove the EGR valve pipe from the left exhaust manifold.
4. Remove the spark plugs cylinder head. Refer to Oil Level Indicator and Tube Replacement in Engine Electrical.
5. Raise the vehicle and support the vehicle with safety stands. Refer to Lifting and Jacking the Vehicle in General Information.



6. Remove the exhaust pipe from the exhaust manifold. Refer to Exhaust Manifold Pipe Replacement in Engine Controls.

•	For vehicles under 8600 lb GVWR, refer to Catalytic Converter Replacement in Engine Controls.

•	For vehicles above 8600 lb GVWR, refer to Catalytic Converter Replacement in Engine Controls.

7. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
8. Remove the left side exhaust manifold. Refer to Exhaust Manifold Removal (Left) .
9. Remove the right side exhaust manifold.Refer to Exhaust Manifold Removal (Right) .
10. Remove the exhaust manifold gasket from the cylinder head.
11. Clean and check the gasket mating surface and the cylinder head. Refer to Exhaust Manifold Clean and Inspect (without RPO K19) .

Important: Install the exhaust manifold gasket with the stamped 7.4 facing away from the cylinder head.

1. Install the exhaust manifold gaskets to the cylinder heads.
2. Install the left side exhaust manifold to the cylinder head. Refer to Exhaust Manifold Installation (Left) .
3. Install the right side exhaust manifold to the cylinder head. Refer to Exhaust Manifold Installation (Right) .
4. Install the left side spark plug heat shields.
5. Install the right side spartk plug heat shields.
6. Install the oil level indicator tube to the exhaust manifold. Refer to Oil Level Indicator and Tube Replacement .
7. Install the spark plugs to the cylinder head. Refer to Spark Plug Replacement in Engine Electrical.
8. Raise the vehicle and support with safety stands. Refer to Lifting and Jacking the Vehicle in General Information.



9. Install the exhaust pipes to the exhaust manifolds. Refer to Exhaust Manifold Pipe Replacement in engine exhaust.

•	For vehicle under 8600 GVWR, refer to Catalytic Converter Replacement in Engine Controls.

•	For vehicles above 8600 GVWR, refer to Catalytic Converter Replacement in Engine Controls.

10. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.



11. Install the EGR pipe to the intake manifold and the exhaust manifold.
12. Connect the battery negative cable to the battery. Refer to Battery Cable in Engine Electrical.