Catalytic Converter for Chrysler 300 (2011-2017) 3.6L AWD

Direct-Fit Replacement Catalytic Converter for 2011-2017 Chrysler 300 (LD)

What it Does: The direct-fit catalytic converter replaces the degraded factory catalyst on 2011-2017 Chrysler 300 AWD models to resolve active P0420/P0430 DTCs, restore exhaust flow balance, and ensure EPA emissions compliance.

The Stock Chrysler 300 Catalyst Degradation

Over extended operational cycles, the OEM washcoat substrate on the LD platform suffers thermal degradation and hydrocarbon sintering. In the 3.6L Pentastar V6, high exhaust gas temperatures accelerate honeycomb structural breakdown and internal fracturing. This creates exhaust backpressure spikes, causes oxygen sensor waveform discrepancies, triggers catalyst efficiency fault codes (P0420 / P0430), and leads to unburnt fuel smells or exhaust rattling under load.

The Engineering Solution

Engineered as a bolt-on assembly specifically for all-wheel-drive drivetrains, this unit incorporates a heavy-duty stainless steel outer shell containing a high-efficiency ceramic catalyst substrate loaded with precious metals. It features precision-machined 4-bolt connection flanges and factory-positioned O2 sensor bungs to maintain accurate downstream air-fuel monitoring without cutting, welding, or ECU re-calibration. The construction resists structural fatigue and thermal cycling, reestablishing proper exhaust scavenging and factory backpressure parameters.

What's Included

• 1 x Catalytic converter assembly
• Mounting bolts

Technical Specifications

Compatibility

• 2011-2017 Chrysler 300 3.6L V6 AWD (4-Bolt Flange)

Frequently Asked Questions & Fitment Warnings

Does this fit the LD 300?

Yes, this is a direct fit for the 2011-2017 Chrysler 300 equipped with the 3.6L Pentastar engine. Fits AWD models with the 4-bolt flange connection only; does not fit RWD models. Not legal for sale or shipment to CA, CO, NY, or ME.

Is welding required for installation?

No, this unit is an engineered direct-fit replacement utilizing factory-matched 4-bolt flanges and pre-threaded sensor ports for a clean mechanical bolt-on installation.

The Chrysler Caliber

Designed to withstand heavy load cycles and the specific torque output demands of the AWD Pentastar drivetrain, this converter delivers durable exhaust containment, proper backpressure balance, and reliable emissions performance.