Does replacing an exhaust system void the manufacturer's warranty?

Standard exhaust systems are designed to perform well in the widest possible range of driving conditions. This means that many compromises have been made. An aftermarket exhaust system can provide better fuel economy,…

Standard exhaust systems are designed to perform well in the widest possible range of driving conditions. This means that many compromises have been made. An aftermarket exhaust system can provide better fuel economy, better engine sound, more engine power and other benefits. However, if your vehicle is still covered by the manufacturer's warranty, you may be a little leery of installing an aftermarket exhaust for fear that it will void your warranty. Will he?

The Truth About Voided Warranties and Parts

The truth is that adding an aftermarket exhaust system to your car will not void your warranty in most cases. Pay attention to the phrase "in most cases". As long as your new system does not damage other vehicle components, your warranty will still be valid.

However, if a problem occurs that a mechanic can trace back to the aftermarket system you installed, your warranty (or part of it) will be void. For example, let's say you installed a complete aftermarket exhaust system and the catalytic converter subsequently failed due to something related to the design of the aftermarket system. The warranty will be voided and you will pay for a new cat out of your own pocket.

On the other hand, if the mechanic can't trace the problem to something related to the aftermarket system, your warranty will still be valid. Dealers and automakers don't really want to void your warranty, but they also don't want to bear the costs of repairs or replacements caused by your actions, and it's not their fault.