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Can changing your original car parts void car warranties?

car parts

When you buy a new car, it comes with a manufacturer (OEM) warranty, which usually lasts around three years or 36,000 miles, for comprehensive coverage on car repairs.

As soon as your car manufacturer’s warranty runs out, you’ll be left to pay for repairs on your own unless you have a vehicle service contract (also known as an extended car warranty). You can buy this type of protection anytime through a third party.

Not all car warranties are the same, but they tend to have restrictions over aftermarket parts that alter the original state of the car. Here’s what you need to know.

What are the different types of car warranties?

There are many types of car warranties. In general, there are two manufacturer’s warranties that come standard with a new car.

Comprehensive warranty

This is also known as a bumper-to-bumper warranty and it’s the highest coverage available. It covers almost all of your car’s mechanical and electrical components, including tech components and A/C. Most car manufacturers provide this warranty for the first three years or 36,000 miles.

Powertrain warranty

This warranty only covers the most important components of your car that make it move, which are the engine, the transmission, the driveshaft, differentials and axles. Most car manufacturers provide this warranty for the first five years or 60,000 miles.

Other car warranties

The manufacturer warranty can include coverage over the restraint (seatbelt) systems, corrosion, emissions, hybrid or electric vehicle (EV) components. The coverage time for these will vary depending on the car make (Ford, Honda, Toyota etc.).

Are you looking for aftermarket warranty for used cars? Read our blog on How to buy an affordable extended car warranty online for tips on choosing one that’s worthwhile.

Will you still be protected by a car warranty if you change your car parts?

Today, buying parts online is a convenient way to find replacement parts that are more affordable and that can be delivered quickly to you. They can save you money and the hassle of having to run around to different auto parts stores.

Many people choose to turn to online part stores, but they may forget that they could be voiding their car warranty. Most car warranties only cover parts installed by the manufacturer.

In what way does an aftermarket car part void a car warranty?

Car manufacturers install factory parts that are designed to work properly with other factory parts. Most car manufacturer’s warranties have explicit language in the contracts that state that parts not installed by the manufacturer WILL NOT be covered. 

But here is the problem. 

It isn’t the aftermarket part itself that’s the issue. The issue is that your aftermarket part can affect other parts!

Under federal law, a manufacturer or dealership repair shop can deny a warranty claim by showing proof that the aftermarket part caused the breakdown. For example, if you have aftermarket shocks in your car and your suspension breaks, even though it’s not due to the shocks, the manufacturer could have grounds to void the coverage you have over the suspension. 

It all depends on the type of repair needed.

How can you get comprehensive car breakdown coverage once the car manufacturer’s warranty runs out?

You can buy coverage that’s similar to the comprehensive protection provided by a bumper-to-bumper manufacturer warranty anytime. There are various extended car warranty options available online, so you should take your time researching what works best for you. The best type of coverage will offer you dependable protection, contract freedom, same-day coverage and an easy claims process at a fair price. has created vehicle breakdown coverage that is simple, trustworthy and affordable. Transforming the extended car warranties marketplace through technology and transparency, offers a full suite of worry-free, no haggle car care plans through low-cost, 100% online, monthly subscriptions that drivers can sign up for in less than five minutes. Get an instant quote today!