Mopar 68036151AG Exhaust Manifold And Catalytic Converter

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Remove all gasket material from mating surfaces carefully to avoid scratching, and inspect for warpage using a straightedge and feeler gauge; any excessive warpage requires replacement or resurfacing.

Start by raising the vehicle and securing it on jackstands. If applicable, spray penetrating oil on nuts and bolts for easier loosening. For 2.4L engines (2014 and earlier), remove the oxygen sensor and rear portion of the exhaust system, then detach the converter from the exhaust manifold. For 2.7L engines, remove the front exhaust manifold/catalytic converter by disconnecting oxygen sensors and other components. For rear exhaust manifold/catalytic converter, remove the engine cover, splash shield, crossunder pipe, and oxygen sensors. For 3.5L engines, remove the front and rear exhaust manifold/catalytic converters by disconnecting oxygen sensors and other fasteners. For 3.6L engines, remove the rear catalytic converter by loosening clamps and fasteners, then guide the converter out from the bottom. Before installing the converter, use anti-seize compound on threads and tighten the fasteners securely. Installation is the reverse of removal for all models.

Disconnect the electrical connectors from both oxygen sensors.

If necessary, take the manifold to an automotive machine shop for resurfacing.

Use anti-seize compound on threads and tighten the fasteners securely.

Lower the vehicle and disconnect the oxygen sensor's electrical connector in the engine compartment.

On the rear manifold, remove the right front driveaxle, lower the vehicle, and take out the exhaust manifold heat shield mounting bolts/nuts to remove the heat shields.

Clean the mating surfaces to eliminate old gasket material and inspect the manifold for distortion and cracks, checking for warpage with a precision straightedge. If necessary, take the manifold to an automotive machine shop for resurfacing.

Raise the front of the vehicle and support it securely on jack stands, then detach the exhaust pipe from the exhaust manifold.

If damage is discovered, the converter should be replaced.

Set the parking brake, block the rear wheels, and raise the front of the vehicle securely on jackstands.

Inspect them for cracks and damage, and use a scraper to clear any old gasket material and carbon deposits.