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Where can I buy a used catalytic converter?

My mechanic told me that my car needs a new catalytic converter. I know they’re expensive, so I want to buy a used one so that I’ll save some money. Where can I buy a used catalytic converter?

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Natalie Todoroff · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
You’ll need to be especially careful about where you buy a used catalytic converter: some states like
California
have recently banned all sakes of aftermarket catalytic converters, while others still allow sales as long as they meet the following California Air Resource Board (CARB) requirements:
  • The catalytic converter is tagged or labeled with a CARB EO number that displays that the part complies with California’s requirements
  • Is warranted for five years/50,000 miles
  • Is compatible with OBD monitors
  • Is installed only on applications listed in CARB’s installation guide
  • Is compatible with OBD catalyst monitors
If you want to save some money on your vehicle’s expenses, we’d urge you to steer clear of shady websites offering too-good-to-be-true deals on aftermarket catalytic converters. Instead, download
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