Mercedes-Benz 400SE Catalytic Converter Replacement Cost.

The average cost for a Catalytic Converter Replacement is between $1306 and $2603. Labor costs are estimated between $290 and $367 while parts are priced between $1016 and $2236. Estimate does not include taxes and fees.
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Learn More About Catalytic Converter Replacement Cost

Best Practices

Catalytic converters are vehicle-specific parts. We recommend using a high quality new part, which is required by emissions control programs in many states.

Common Symptoms

A failing catalytic converter can cause a Mercedes-Benz 400SE to fail emissions tests and the Check Engine Light to illuminate. The exhaust might have an unusual smell.

A "restricted" catalytic converter can result in a loss of engine power.

Common Misdiagnoses

It is very important to have the shop identify why the catalytic converter failed. Failure is almost always due to another problem, which if not resolved, will quickly ruin a new catalytic converter.

Most Common Mercedes-Benz 400SE Repairs

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