Jeep 5175361AA Intake Manifold

To install the upper intake manifold, align it with the lower intake manifold and tighten the bolts according to the specified torque.

Remove the ignition coils and, on 2005 models, the spark plug wires.

To remove the upper intake manifold, start by relieving the fuel system pressure and disconnecting the battery cable. Then, remove the air filter housing and label and disconnect the hoses and electrical connectors attached to the intake manifold and throttle body. Remove the bolts securing the EGR pipe and the brackets from the throttle body and upper intake manifold. Loosen the upper intake manifold bolts and lift the manifold from the engine. Clean the mounting surfaces and inspect the O-ring gasket. If it's in good condition, it can be reused. Install the gasket into the groove in the upper intake manifold and then install the manifold onto the lower intake manifold, tightening the bolts in a circular pattern.

The remaining installation steps are the reverse of removal. Start the engine and check carefully for vacuum leaks at the intake manifold joints.

Check the O-rings for damage or hardening; if they are in good condition, they can be reused; otherwise, replace them and ensure they seat properly.