Catalytic Converter Replacement Cost

Replace a failed or stolen catalytic converter.

$900 – $2,500

Typical labor: 1 to 3 hours

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Parts vs Labor

75% / 25%

Typical share of total cost

Labor Time

1 to 3 hours

At a typical shop

Difficulty

Advanced DIY

3 of 5

Prices are national averages. Your exact cost depends on your vehicle, location, and shop. Get a free personalized AI estimate above.

Common Symptoms

Loud roaring exhaust (often from theft)

Check engine light with code P0420 or P0430

Failed emissions test

Rotten egg smell from exhaust

What It Is

The catalytic converter cleans up harmful emissions before they leave the tailpipe. It contains precious metals like platinum and palladium, which is why it's expensive and frequently stolen.

Why It Matters

You cannot legally drive without a working cat in most states, and you'll fail emissions testing.

How to Save Money on Catalytic Converter Replacement

After-market direct-fit cats are 50 to 70 percent cheaper than OEM and work fine on older cars
Some states require CARB-compliant cats, check before buying a generic one
Anti-theft shields cost $150 to $300 installed, much cheaper than a replacement cat

Often Done Together

Shops commonly pair catalytic converter replacement with these jobs to save on overlapping labor:

Oxygen Sensor Replacement

$200 – $500

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Frequently Asked Questions

Why are cats so expensive?

They contain precious metals like platinum, palladium, and rhodium, which are worth hundreds of dollars each in a single converter.

Can I drive without a catalytic converter?

It's illegal in all 50 states under federal law, and it's loud and smelly. Get it replaced.