Does Changing the Exhaust System Void a Manufacturer Warranty?

Stock exhaust systems are designed to provide good operation in the widest possible range of driving conditions. That means there are a lot of compromises made. An aftermarket exhaust system can offer better fuel economy, a better sound from the engine, more power from the engine and other benefits. However, if your vehicle is still covered by the manufacturer’s warranty, you might be a bit leery about installing an aftermarket exhaust for fear that it will void your warranty. Will it?

The truth about voided warranties and aftermarket parts

The truth of the matter is that adding an aftermarket exhaust system to your vehicle will not void your warranty in most cases. Note that phrase, “most cases.” If your new system does not cause any damage to other components on the vehicle, then your warranty will be fine and remain intact.

However, if a problem arises that a mechanic can trace back to the aftermarket system you installed, then your warranty (or a portion of it) will be voided. For instance, let’s say you installed a full header-back aftermarket exhaust system, and the catalytic converter failed afterward because of something to do with the design of the aftermarket system. The warranty would be voided, and you’d be paying for a new cat out of your own pocket.

On the flip side, if the mechanic could not trace the failure to something to do with the aftermarket system, then your warranty would remain in place. Dealerships and automakers don’t really want to void your warranty, but they also don’t want to be on the hook for repair or replacement costs caused by something that you did, and that was not their fault.


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Ruben

10 years of experience
63 reviews
Ruben
10 years of experience
Buick Park Avenue V6-3.8L - Smoke from engine or exhaust - Lexington, South Carolina
Great Guy. Very knowledgeable and knew exactly what he was talking about. Friendly and educated me about what exactly what was wrong with my car.
Pontiac Grand Prix - Smoke from engine or exhaust - Columbia, South Carolina
Great mechanic that explains things completely. Ruben was awesome. He went through the inspection with me giving advise on different things to be aware of. I appreciate everything that he did for me today.

Duane

25 years of experience
510 reviews
Duane
25 years of experience
GMC Yukon V8-5.7L - Smoke from engine or exhaust - Oceanside, California
The man came and diagnosed my truck in matter of seconds. Was phenomenally knowledgeable in what he was looking for and gave me answers to my questions about my truck. Would recommend this man to fix my truck in the future.

Michael

16 years of experience
62 reviews
Michael
16 years of experience
Audi A8 Quattro V8-4.2L - Smoke from engine or exhaust - Crosby, Texas
Michael was very knowledgeable and honest. He did a great job diagnosing my car and had a quote for me later on that evening. I’m glad I found out about this website.

William

34 years of experience
517 reviews
William
34 years of experience
Mercedes-Benz R350 V6-3.5L - Smoke from engine or exhaust - Phoenix, Arizona
He was on time, He explained what was causing the issue, he was polite and professional, I look forward to not only working with your Mechanic but with William Specifically.

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