The Do’s and Don’ts of Installing Aftermarket Car Parts: 10 Things to Know

The auto industry is one of the biggest out there and we all know that nearly every month there is a huge novelty that you, as an enthusiast, have to have. Having a car and taking care of it goes two ways. You can simply maintain it and keep it original, factory, or you can do that but slap some modifications on it to make it look better and more appealing.

If you’re an auto enthusiast, you know how exciting it can be to upgrade your car with aftermarket parts. Whether it’s a new exhaust system, a turbocharger, or a custom suspension setup, aftermarket parts can add significant performance gains and visual appeal to your ride.

If you are considering getting some modifications for your ride, you need to know that there are OEM parts and mods and that there are aftermarket car parts. There is some difference between these, mainly considering fitment and quality of the aftermarket ones, but if you pick a good brand and supplier then you don’t need to worry about those things.

However, it’s essential to know the do’s and don’ts of installing aftermarket car parts to avoid common mistakes that could damage your car or compromise your safety.


1. DO: Research the Parts Before Buying

Before purchasing any aftermarket car parts, it’s crucial to do your research. Look for reputable brands and reviews from other car enthusiasts who have installed the same parts. Don’t just go for the cheapest option or the first part you come across. It’s important to invest in quality parts that are designed to fit your vehicle and perform as expected. When doing this cheaper and cheapest should never be your first option because of and safety of everyone around you.

2. DON’T: Forget to Consider Your Car’s Warranty

Car's Warranty

It’s essential to be aware of your car’s warranty before installing aftermarket parts. Some car manufacturers may void your warranty if they discover that aftermarket parts have been installed. If you’re unsure about your car’s warranty, check with your dealership or manufacturer before making any modifications. You also need to know that there might be issues with your car’s safety inspection or vehicle inspection.

Some aftermarket modifications may not allow you to pass which will cause you issues with registration. Make sure you keep the original parts you change when you need to do this and make sure you follow your state’s regulations regarding this.

3. DO: Make Sure the Parts Fit Properly

Aftermarket parts may not fit your car perfectly out of the box. It’s important to ensure that the parts you purchase are designed to fit your specific make and model. If the parts require modifications, it’s best to have them installed by a professional who has experience with aftermarket parts. This is the thing that is avoided with the first DO – do your research.

4. DON’T: Neglect Safety


When installing aftermarket parts, it’s crucial to prioritize safety. Make sure that the parts you purchase are designed to work with your car’s existing safety features, such as airbags, seat belts, and anti-lock brakes. Avoid modifying your car in a way that compromises your safety or the safety of others on the road. This should be imperative to anyone considering aftermarket parts and this should never be debatable, ever.

5. DO: Consider the Impact on Performance

Before installing aftermarket parts, consider the impact they will have on your car’s performance. Some parts may improve your car’s speed and handling, but others may negatively affect fuel efficiency or cause engine damage. It’s important to choose parts that are appropriate for your driving style and intended use, as well as parts that will not cause your engine difficulties or worse – catastrophic failure.

6. DON’T: Skimp on Installation

DIY mechanic

Aftermarket parts often require specialized installation techniques that may be beyond the capabilities of a DIY mechanic. It’s important to have aftermarket parts installed by a professional who has experience with the specific parts you’ve purchased. Skimping on installation could result in damage to your car or compromise your safety on the road.

Most modifications are done inside with lighting and other electrical bits and pieces. If you are fitting a new sound system, stereo, navigation or infotainment system, a car electrician is always the best decision because they know what to do, how to do it and what is safe.

7. DO: Keep Documentation of Modifications

If you install aftermarket parts on your car, it’s important to keep documentation of the modifications. This includes receipts for parts and installation, as well as any other documentation related to the modifications. This documentation will be helpful if you need to make a warranty claim or sell your car in the future. The history of the car is always important and you will appreciate that later on if you have issues as well as a new buyer when you decide to sell it.

8. DO: Consider the Legal Implications

local laws

Before installing aftermarket parts, it’s important to consider the legal implications. Some modifications may not be legal in your area or could result in fines or even vehicle impoundment. It’s essential to check with your local laws and regulations before making any modifications to your vehicle.

9. DON’T: Sacrifice Quality for Price

While it’s tempting to go for the cheapest aftermarket parts available, it’s important not to sacrifice quality for the price. Low-quality parts can lead to damage to your car and even compromise your safety on the road. It’s essential to invest in quality parts that are designed to fit your vehicle and perform as expected. This is best seen with springs, struts, coils overs and other things. These tend to be pricy and if you go with the cheapest options you will sacrifice a lot of comfort for a little bit better stance of your car.

10. DO: Consult with Experts

car service

If you’re unsure about any aspect of installing aftermarket parts, it’s always best to consult with experts. This can include mechanics who have experience in this field or those that did fit a certain amount of a part you are having issues with. You will get feedback, you will get professional service and you will have a piece of mind.


Installing aftermarket car parts can be a rewarding experience for auto enthusiasts, but it’s important to follow the do’s and don’ts of installation to avoid common mistakes. Remember to research the parts before buying, consider your car’s warranty, ensure the parts fit properly, prioritize safety, consider the impact on performance, don’t skimp on installation, and keep documentation of modifications. By following these guidelines, you can upgrade your car safely and with confidence, and you will never have issues or setbacks that can surprise you when you least expect them.