Catalytic Converter Replacement: labor quote guide
Typical labor time (approximate)
About 1 to 3.5 hours. Roughly 1 to 3.5 hours. Bolt-in direct-fit converters are quicker; manifold converters, seized bolts or welding take longer.
Approximate only: a rough general range, not labor-guide data. Times vary widely by vehicle and condition. Check a labor guide for the exact vehicle. How we estimate
The quote buttons open the labor-quote calculator prefilled; "Start an estimate" adds a labor line to the estimate & invoice generator. Add your own rate, parts and tax.
What's involved
- Confirm a converter fault: fix misfires and fuel trim problems first, check O2 data and backpressure
- Remove the O2 sensors and the converter section (cut or unbolt)
- Install a legal, application-correct converter with new gaskets and hardware
- Clear codes and verify readiness monitors complete
General outline only. Follow the service information for the specific vehicle.
What changes the time
- Manifold (close-coupled) converters
- Rusted studs and flanges
- Welding vs bolt-in
- Emissions rules on which converters are legal in your state
Related parts & common add-ons
- O2 sensors
- Exhaust gaskets and hardware
- Repair of the cause (misfire or oil consumption)
- Anti-theft shield
Price parts with the parts markup calculator, and note findings on the inspection checklist.
FAQ
Why did the converter fail?
Often because of misfires, oil burning or coolant leaks. Fix the root cause or the new one can fail too.
Which converter can I install?
That depends on emissions regulations where the vehicle is registered (for example, CARB-legal requirements in California). Check before quoting.
Can a code P0420 be something else?
Yes. Exhaust leaks, O2 sensor problems and engine issues can set catalyst efficiency codes.
More engine, ignition & fuel jobs
- Timing Belt Replacement
- Spark Plug Replacement
- Serpentine Belt Replacement
- Fuel Pump Replacement
- Oxygen (O2) Sensor Replacement
- Ignition Coil Replacement
- Valve Cover Gasket Replacement
- Oil Pan Gasket Replacement
- Intake Manifold Gasket Replacement
- Head Gasket Replacement
- Timing Chain Replacement
- Fuel Injector Replacement
- Engine / Transmission Mount Replacement
- Mass Air Flow (MAF) Sensor Replacement
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