Catalytic converter replacement cost
High parts cost; confirm the converter is actually failed before authorizing — P0420/P0430 are not automatic converter orders.
Typical U.S. independent-shop price range
$2,280–$2,480 national average for catalytic converter replacement.
High variance: Catalytic converter replacement can run well outside this national average depending on vehicle, OEM vs aftermarket (and CARB vs federal) parts, and related exhaust/O2 work.
AAA Automotive notes catalytic converter replacement often ranges about $1,000–$4,000 for parts and labor depending on vehicle, part type, and shop (AAA source) — wider than a single national average band.
- Labor: $236–$347
- Parts: $2,044–$2,133
- Source: RepairPal — price data as of September 3, 2026. Excludes taxes, fees, diagnostic time, and your location. Related repairs may be needed.
What’s usually included
RepairPal’s average is for converter replacement parts and labor. Exhaust gaskets, O2 sensors, and manifolds can be extra. Federal/state rules affect aftermarket vs OEM converters — shops should use compliant parts.
Dealer vs independent
Dealer OEM converters are often the most expensive path. Independents may offer CARB-compliant aftermarket units where required. Ask about warranty and emissions legality in your state.
Common upsell red flags
- Converter quote with no live-data confirmation of catalyst efficiency
- Ignoring upstream misfire that will destroy the new cat
More patterns: spotting upselling.
Questions before you authorize
- What tests showed the converter failed (not just the code)?
- Are O2 sensors included? Why?
- Is the part emissions-legal for my state?
Also see before you authorize a repair and how to read a repair estimate.
DIY vs shop
Usually not DIY (welding, emissions legality, heat shields). Fix root engine problems first.
FAQ
How much does catalytic converter replacement cost?
According to RepairPal, the U.S. figure is $2,280–$2,480 for catalytic converter replacement (price data as of September 3, 2026), excluding taxes, fees, and location. Your vehicle and region will differ.
Why is a shop quoting more (or less) than the national average?
Labor rates, OEM vs aftermarket parts, vehicle packaging, diagnostics, and related repairs move the number. National averages on this page exclude taxes, shop fees, diagnostic time, and your location. Ask for a line-item estimate and compare with a second independent shop.
What’s usually included — and what’s excluded?
RepairPal’s average is for converter replacement parts and labor. Exhaust gaskets, O2 sensors, and manifolds can be extra. Federal/state rules affect aftermarket vs OEM converters — shops should use compliant parts. Cited ranges exclude sales tax, shop fees, diagnostic time, and regional labor-rate differences unless a source on this page says otherwise.
Can I DIY this, or should I use a shop?
DIY-able rating on this guide: No. Usually not DIY (welding, emissions legality, heat shields). Fix root engine problems first.
Why can this repair run outside the cited range?
Catalytic converter replacement can run well outside this national average depending on vehicle, OEM vs aftermarket (and CARB vs federal) parts, and related exhaust/O2 work. Treat the national average as a sanity check, not a firm bid.
What upsell red flags should I watch for on this job?
This guide flags: Converter quote with no live-data confirmation of catalyst efficiency; Ignoring upstream misfire that will destroy the new cat. More patterns: /upselling.
Find an honest shop
Greater LA · NYC · Chicago · Houston · Phoenix · Seattle · Denver · Dallas · Atlanta · DC
All cost guides: /costs · Affiliate disclosure