Exhaust System: Description: 6.4L
The front exhaust pipe/catalytic converter assemblies (1, 2) are hydra-form thin wall air gap design. This design is used to reduce heat, noise and improve emissions. When replacement is required, use original equipment parts (or their equivalent).
On a 6.4L, both catalytic converters attach directly to the exhaust manifold using studs and nuts.
The exhaust down pipes exit the converters and connect into the rear muffler and resonator assembly.
The SRT performance exhaust systems (4) use dual mufflers (3), dual resonator and tailpipes (1). Each exhaust bank contains an electronic active exhaust valve (2) located underneath the rear cradle.
The electronic active exhaust valves are comprised of two elements, an electronic actuator, which can be serviced separately and a mechanical valve, that is welded into the exhaust pipes and must be serviced with the exhaust assembly.
The exhaust system must be properly aligned to prevent stress, leakage and body contact. If the system contacts any body panel, it may amplify objectionable noises originating from the engine or body.
When inspecting an exhaust system, critically inspect for cracked or loose joints, stripped screw or bolt threads, corrosion damage and worn, cracked or broken hangers. Replace all components that are badly corroded or damaged. DO NOT attempt to repair.
When replacement is required, use original equipment parts (or their equivalent). This will assure proper alignment and provide acceptable exhaust noise levels.