Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHRYSLER2007300 V6-2.7L VIN RREPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTEXHAUST SYSTEMDESCRIPTION AND OPERATION
2007 Chrysler 300 V6-2.7L VIN R
Exhaust System: Description and Operation
2007 Chrysler 300 V6-2.7L VIN RSECTION Description and Operation
DESCRIPTION
EXHAUST SYSTEM - V6 SINGLE SYSTEM
The exhaust system consists of two front close coupled catalytic converters, a RH rear muffler and resonator assembly, and on vehicles equipped with dual exhaust, LH resonator and tailpipe assembly.
EXHAUST SYSTEM - V8 DUAL SYSTEM
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 (1 and 4). On the 2.7L/3.5L equipped vehicles, there is a flex coupler directly behind the LH catalytic converter. The upstream oxygen sensors are located in each exhaust manifold. On 5.7L equipped vehicles there is a flex coupler behind both LH and RH catalytic converters. The downstream oxygen sensors are located behind the flex couplers. The 6.1L does not use flex couplers. The downstream oxygen sensors are located behind the catalytic converters.
For the single exhaust systems, the RH muffler, resonator and tailpipe (4) are one single unit.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.