Do Headers Void Warranty? (Important Information)

The engine performance depends on the amount of air intake and exit from the cylinders. Engine modification with headers makes its intake and exhaust system less restrictive. But the car warranty tends to toss the mind of many people.

Do headers void the warranty?  In short No. But if the cause of the car problem is related to this modification, the contract is rendered void. However, most dealers cannot void the entire power train warranty for the headers. They only void the part with these modifications.

Keep reading this article to learn how headers void the power-train warranty and other modifications that do not void your warranty. You’ll also get to know how this modification boosts the performance of vehicles in a more detailed form.

Will Aftermarket Headers Void My Warranty?

A warrant is an agreement between the car owner and the company that built the vehicle. It allows the company to take care of any repairs provided the owner maintains the car according to the required expectations.

So, will aftermarket headers void my warranty? No. But if the dealer proves that the aftermarket header is responsible for repair needs, they can deny you the warranty coverage.

Be sure to install the aftermarket header without causing more problems. If the cause of the part failure is unclear, the dealer will have to charge you a fee to diagnose the vehicle. But if the aftermarket part has nothing to do with the problem, the diagnosis fee will be refunded.

You should note that aftermarket parts usually raise a red flag when the car is brought for the service. Research more on car modifications and find a dealer who is a little more mod-friendly before making any changes.

Do Changing Headers Void Warranty?

We all have the desire to improve engine performance. High engine performance fosters a better driving experience regardless of the road condition. The addition of headers enhances proper air intake and exit from the engine.

So, do changing headers void the warranty? Yes. Any modification made on the car has a high chance of rendering the warranty void. But the dealer has to show that the changes cause the failure before denying you the warranty. A car brought for service with new headers will raise a red flag to the dealer.

Most car dealers can use the changes as proof to deny any work on the engine. Do not modify the system unless you can afford to fix the problem without a warranty.

Always take time to research the car dealer before opting to change the headers. Some dealers are pretty cool about the modifications. But ensure the changes do not cause potential damages in the long run.

Will Long Tube Headers Void Warranty?

Some dealers usually take advantage of car owners by denying them warranty coverage in case of repairs. Always consider seeking service advisor assistance when denied warranty claim unfairly since warranties are open for interpretations. So, will long tube headers void the warranty?

Yes. Long tube headers involve complex modification tasks and increase the risk of tampering with engine performance. But the dealer will have to prove before denying you the warranty coverage. Long tube headers usually tune the engine to get rid of the check engine lights.

Besides that, it allows more air to flow out of the engine and reduces the performance of oxygen sensors. The issue will later set off your check engine light. The good news is that the power train warranty will remain intact after installing the long tube headers.

Remember to consult the dealer before making any changes to improve your car engine performance to avoid rendering the warranty void.

What Modifications Might Not Void Your Warranty?

Most car enthusiasts buy vehicles with intention of improving performance through modifications. But the factory warranty maintenance usually puts them in a fix. However, you can still modify the car without running into any warranty issues.

You should note that a dealer cannot legally void your warranty without substantial proof. A dealer has to prove beyond doubt that the modification is responsible for the car failures.

Below are some of the modifications that are warranty worry-free:


Coilovers and spring upgrades are a safe bet. These components usually come with a manufacturer warranty. There is no need to worry about blowing the strut out when not covered in the dealership warranty.

Cat-Back Exhaust

These are the most popular modifications done on any car. Thanks to its ease of installation and ability not to raise a red flag when dealing with warranty issues.

Car Lights

Most lighting upgrades are suitable for customizing cars without hurting the dealership warranty. These upgrades involve changing the lights for better output.

Exterior Modification

Anything bolt inside or outside for appearance purposes will not have manufacturer warranty issues. These aesthetic modifications will never interfere with the engine’s performance.

Short Shifter

Shifter modifications are acceptable and cannot render your warranty void. But if the changes bring transmission problems, your manufacturer warranty will become void.

Sway Bars

It is a suspension component that usually interferes with drive-train warranties. But any suspension components are a safe bet since they come with manufacturer warranties.


are independent components in a car. Any modifications or replacements will never affect the manufacturer’s warranty. They play a vital role in performance and safety.


Tires are usually huge performance upgrades and safe bets. Most dealers will not deny car owners warranty coverage if they notice wheel changes.

Final Words

Car modification helps to improve its performance and enhance a better driving experience. The reason makes car enthusiasts buy performance vehicles with intention of modifying and having fun in the long run.

But some car owners are more concerned with maintaining the factory warranty. They become more cautious when undertaking modifications to avoid rendering their manufacturer warranty void.

Headers help to improve the engine performance. It allows smooth flow of air intake and exit in the cylinders. But the modification might result in leakages if not done appropriately. The leakage later results in manufacturer warranty issues.