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In this DIY, you will find step-by-step instructions on how to change the catalytic converter on a Mercedes-Benz.
While the pictures in this guide are from an S-Class, these instructions will help you learn how to change a catalytic converter on Mercedes-Benz C, E, CLK, CLS, GL, ML, GLK, and other models required with V8, V8, and V12 engines.
Allow the car to cool down. The exhaust system can get very hot and may remain hot even after the engine cools down. Jack up the vehicle front and back on the side that you will be changing the catalytic converter. Make sure to secure the vehicle with jack stands. Set the parking brakes and block the wheels on the opposite side. Do not get under a vehicle that is not secured with jack stands.
Replacing a Mercedes cat converter is relatively easy. The main challenge is when a bolt refuses to come off, and that happens quite a bit. What we have found to be very helpful is to spray penetrating oil on the bolts that need to be removed a couple of times the night before you plan on replacing the caltyatic converter.
If you have a new OEM catalytic converter, the procedure is very straight forward and can be completed in your driveway. Just make sure to secure the vehicle with jack stands, as you will spend quite a bit of time under the car.
When it comes to installing a universal catalytic converter, it may be better to leave it to the professionals. Installing a universal catalytic converter may require cutting the old cat converter and welding. We would recommend finding a muffler shop in your area and have them install the catalytic converter. We have installed universal catalytic converters on Mercedes-Benz in the past, and they performed just as well as the OEM cat.
The average cost to replace the catalytic converter at a Mercedes-Benz dealership is around $1400-$1800.
A less expensive alternative is to find a muffler shop that will install a universal catalytic converter. The cost to install a universal catalytic converter ranges between $400 and $800. A universal catalytic converter works the same as the OEM cat converter, and all the oxygen sensors still work properly.
By YOUCANIC Automotive Experts Published on: Wednesday, July 8, 2020. |