Catalytic Converter for Dodge Challenger (2011-2022) 5.7L

Direct-Fit Stainless Catalytic Converter Pair for 2011-2022 Dodge Challenger (LC/LA)

What it Does: This left-and-right direct-fit catalytic converter pair replaces failed front emissions units on the 2011-2022 Dodge Challenger (LC/LA) with the 5.7L HEMI V8 to restore exhaust flow and catalyst efficiency.

The Stock Dodge Challenger Catalytic Converter Failure

On the LC/LA Challenger equipped with the 5.7L EZH/EZC HEMI V8, factory front converters endure extreme thermal cycling near the exhaust manifold flanges. Repeated heat soak degrades the precious-metal washcoat and fractures the internal ceramic monolith, especially after ignition misfires or rich fuel trims. Loose substrate fragments then obstruct exhaust ports, spiking backpressure and triggering P0420 or P0430 catalyst-efficiency fault codes.

Common Symptoms of a Failing OEM Catalytic Converter

• Check Engine Light / DTCs: Triggers P0420 or P0430 when downstream O2 sensors detect depleted catalyst efficiency.
• Substrate Rattle: Metallic rattling beneath the car caused by a fractured ceramic brick inside the shell.
• Backpressure & Power Loss: Sluggish throttle response and failed emissions inspections caused by collapsed honeycomb cells.

The Direct-Fit Stainless Catalytic Converter Solution

This complete front converter pair restores OEM flow geometry using rust-resistant stainless steel bodies (8-inch length, 5-inch height) and factory-bent pipes built to resist heat cracking. Each unit houses a ceramic honeycomb substrate with a precious-metal washcoat to convert HC, CO, and NOx for OBD-II and EPA federal compliance. Integrated O2 sensor ports and factory flanges provide direct bolt-on fitment with zero cutting or welding.

What's Included

• 2 x Catalytic Converters (Front Left and Right)
• 2 x Exhaust Clamps
• 4 x Flange Bolts with Nuts

Technical Specifications

Compatibility

• 2011-2022 Dodge Challenger R/T (5.7L HEMI V8)
• 2011-2022 Dodge Challenger R/T Plus (5.7L HEMI V8)
• 2011-2022 Dodge Challenger R/T Shaker (5.7L HEMI V8)
• 2011-2022 Dodge Challenger R/T Classic (5.7L HEMI V8)
• 2011-2022 Dodge Challenger T/A (5.7L HEMI V8)

Frequently Asked Questions & Fitment Warnings

Does this fit the LC/LA Challenger?

Yes. This is a direct fit for the 2011-2022 Dodge Challenger equipped with the 5.7L HEMI V8 engine. Excludes 3.6L V6, 6.4L, and 6.2L supercharged engines. EPA federal compliant only—not CARB approved and not legal for vehicles registered in California, New York, Colorado, or Maine.

Will this clear P0420/P0430 codes, and are O2 sensors included?

Yes, if caused by a failed catalyst; O2 sensors are not included. Installing new direct-fit converters restores efficiency to clear P0420 and P0430 codes once exhaust leaks are ruled out and existing or new oxygen sensors are installed.

What mounting hardware is included, and what prep is needed for installation?

Two exhaust clamps and four flange bolts with nuts are included. Soak fasteners with penetrating oil on a completely cool exhaust, install using new flange gaskets, torque hardware evenly, and inspect every joint for leaks.

The Dodge Performance Standard

Built for unrestricted V8 exhaust flow and crisp throttle response, these stainless converters eliminate backpressure from degraded OEM bricks. Precision factory flanges restore reliable street drivability and clean emissions operation under sustained engine load.