Catalytic Converter Replacement Cost: Parts, Labor & Average Price

The catalytic converter sits in the exhaust system and converts harmful engine gases into less harmful ones before they leave the tailpipe. When it clogs, breaks down internally, or is stolen, the car may run poorly, fail an emissions test, or sound loud. Replacement is one of the pricier exhaust repairs because the part itself is expensive.

Figures below come from AAA and a second published guide, with a check date of Oct 11, 2026. The spread is wide because vehicle type, part grade, and the cause of the failure all change the bill.

The vehicle drives the price more than anything else. Trucks and luxury models usually have larger or more complex exhaust systems, and the converter for them costs more. Many cars also have more than one converter, so a quote that covers a single unit may not cover the whole job.

Jerry's "most cars" row is stated per bank, meaning per side of the exhaust on engines that have two. Ask whether a quote covers one converter or all of them.

The reason the converter failed changes what the shop has to do. A clogged unit often points to another engine problem, such as misfires or burning oil, which should be fixed too or the new converter may fail the same way. A rattling sound usually means the internal core has broken apart. After theft, the work can include more than the converter itself, since thieves often cut pipes or damage nearby parts.

Most of the bill is the part. Labor is shorter than many people expect, because the job is mostly cutting or unbolting the old unit and fitting the new one.

Shop rates add to that total.

Rust makes the job slower. Bolts on older exhaust systems may be seized, and a shop may need extra time or replacement hardware.

Two guides can describe the same repair and land far apart. One may price a typical car, while another prices a wider mix that includes trucks and luxury models. A quote may also include or leave out gaskets, pipes, sensors, and the diagnostic fee.

Part grade is another reason. Aftermarket converters generally cost less than parts from the vehicle manufacturer, and some are built for a narrower set of vehicles. Read each row label before comparing numbers, and ask your shop which kind of part it is quoting.

An original equipment (OEM) converter is made to the vehicle maker's specification and costs more. An aftermarket converter costs less, and quality varies by brand. Some states, including those that follow California Air Resources Board (CARB) standards, may require converters approved for those rules, which can limit your choices and raise the price. Requirements differ by state and by model year, so check with your state emissions program or a licensed shop before buying a part. The EPA's page on catalytic converters is a starting point for federal rules, but your state may add its own.

Replacing a converter can lead to other work. Oxygen sensors sit before and after the converter and monitor how well it is working. A failed converter is sometimes paired with a sensor replacement.

If the check engine light came on before the converter failed, the shop may need to diagnose the underlying cause first. A failed oxygen sensor or a misfire can trigger converter codes without the converter being the real problem. Paying for a diagnosis is cheaper than replacing a good converter.

In most cases, no. A clogged or broken converter is replaced rather than repaired. Some shops offer cleaning for mild clogging, but results vary and a damaged core cannot be fixed. If a shop recommends replacement, ask what test showed the converter had failed.

Dealers typically charge higher labor rates and install manufacturer parts. Independent exhaust and muffler shops can offer aftermarket options at lower prices. Get at least two written quotes that list the part brand, whether it is compliant for your state, and the warranty.

Converter theft is a common reason for replacement. Parking in a garage or well-lit area, etching the vehicle identification number onto the converter, and installing a shield or cage can make theft harder. Check your auto policy as well: comprehensive coverage may pay for theft damage, subject to your deductible. Ask your insurer for the details.