Quick answer: Replace Catalytic Converter on a 2015–2023 Dodge Challenger is rated Advanced and takes about 2-3 hours. You'll need 8 tools for this job, and parts cost about $1,280. This guide walks you through the full job step by step, including the mistakes to avoid.
| Part Name |
Part Number |
Price |
Buy |
| Replacement Catalytic Converter |
K6862233AB |
$1,200.00 |
|
| Exhaust Gasket Set |
K6810135AB |
$50.00 |
|
| Exhaust Hanger Kit |
K6810136AB |
$30.00 |
|
| Anti-seize compound |
— |
— |
|
About prices: shown prices are typical retail averages and change frequently; cheaper alternatives may be available. Confirm the current price before buying.
💡 Pro tip: Order all parts at once to save on shipping
Step-by-Step Instructions
Follow these steps carefully
1
Safety setup and soak fasteners
Park the 2015-2023 Dodge Challenger SRT on level ground, set the parking brake, and let the exhaust cool completely — catalytic converters stay extremely hot. Wear eye protection and gloves.
🔧 Mechanic's note — Tom Becker
I let the exhaust cool completely before touching anything — I've brushed a catalytic converter that looked cool, and the burn taught me converters lie about their temperature.
2
Raise the 2015-2023 Dodge Challenger SRT and disconnect sensors
Jack and support the 2015-2023 Dodge Challenger SRT on jack stands at approved points. Unplug upstream/downstream O2 sensors at the converter and carefully unthread them if they must come out with the unit.
3
Unbolt flanges and hangers
Remove the catalytic converter flange bolts at the manifold/downpipe and rear pipe on the 2015-2023 Dodge Challenger SRT. Free rubber hangers or brackets. If bolts shear, extract carefully — do not force and crack the exhaust pipe.
4
Remove the old converter and compare
Lower the old converter from the 2015-2023 Dodge Challenger SRT. Compare inlet/outlet diameter, sensor bung locations, and overall length to the new unit.
5
Install the new converter and sensors
Fit new gaskets, hang the converter, and start all fasteners by hand. Reinstall O2 sensors with anti-seize on the threads only (not the tip) and plug connectors fully on the 2015-2023 Dodge Challenger SRT.
6
Start, check for leaks, and clear codes
Start the 2015-2023 Dodge Challenger SRT and inspect every joint for exhaust leaks. Take a careful road test once warm. Clear catalyst/O2-related codes if needed and confirm readiness monitors can complete. Recheck torque after a heat cycle.
🔧 Mechanic's note — Ray Delgado
I recheck torque after a heat cycle — I've had exhaust fasteners loosen once everything expanded and contracted, and the tick-tick of a leak is unmistakable.
All Done!
Test your repair before closing everything up. If something doesn't work right, double-check your steps.
⚠️ Common Mistakes to Avoid
- • Not properly supporting the vehicle before starting the repair
- • Failing to apply penetrating lubricant to exhaust connections, making disassembly difficult
- • Over-tightening bolts during reassembly, leading to exhaust leaks
