Catalytic Converter Replacement Cost
Cat replacement pricing is dominated by parts cost. CARB-compliant aftermarket cats are legal in most states and 40–60% cheaper than OEM.
Fair total cost
$610–$2,710
Parts
$500–$2200
Labor time
1–3 hrs
Shop rate
$110–$170/hr
Common symptoms
- P0420 or P0430 check-engine code
- Rotten-egg smell from exhaust
- Loss of power above 3,000 RPM
What a fair quote includes
- Direct-fit or universal converter (welded)
- New gaskets and exhaust hardware
- Post-install drive cycle to clear codes
Red flags to watch for
- OEM-only quote when a CARB-compliant aftermarket is legal in your state
- Upstream O2 sensor replaced without a fault code
- Quote that ignores the cause of failure (rich condition, oil burning)
FAQs
Will an aftermarket cat pass emissions?
Yes — as long as it's CARB-compliant (required in CA, NY, CO, ME, WA) or EPA-compliant elsewhere.
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