The auto repair sector is expected to be worth a staggering $810 billion by 2026. If you’re part of this growing industry, you’ll know that some parts need to be replaced more than others. Yet what are the most important car parts to keep in stock at all times?

No matter whether you know how to replace car parts with your hands tied behind your back or are new to the field, you can’t afford to skip this information. Understanding which basic car parts you need to keep on hand at all times can save you stress and hassle. Final mile delivery can get you these parts on the same day, so there’s no reason not to keep them in stock!

Are you ready to learn which important car parts you need a permanent supply of? Then read on and keep your shop running smoothly!

The Battery

A vehicle’s battery keeps everything else running. A car can’t even start under its own power without a working battery.

Yet people constantly run their batteries down. They leave air conditioning or heating on when the engine isn’t running, or drain the battery via a trailer hookup. This means that you always need to have car batteries in your shop ready to go.

They’re very easy to fit, but if the customer isn’t comfortable doing this, you can make a bit of extra cash by fitting them. Having car and truck batteries on hand at all times is crucial for any well-run car repair shop.

Brake Pads

Brake pads need replacing relatively frequently. In general, they should be replaced every 30,000-70,000 miles. That seems like quite a sizeable gap in the range, doesn’t it?

Heavier vehicles wear out their brake pads more regularly than lighter ones. It will also depend on how the car is driven. If the driver often goes to track days and hammers the everloving heck out of their brakes, they will wear out more quickly.

Every vehicle needs new brake pads now and again. Keep a wide variety of different brake pads on hand, and you’ll be set to help everyone out.


The normal windshield maintenance that needs carrying out is simple: cleaning. Yet it’s one of the most important car parts to replace as soon as there are issues. Too many people drive around with spidery cracks all over their windshield, limiting visibility.

If you have windshields in your store and the correct equipment to replace them, you can make a lot of money.

Research the most common cars in your area and have replacement windshields prepped and ready to go. Replacing them is often too complex for amateurs, so you’ll be able to do a lot of business.

Spark Plugs

Spark plugs are one of the most important car parts and they often need replacement. If they are left unchanged, they can affect performance, surging, and other engine issues. On diesel engines, there aren’t any spark plugs, but glow plugs instead.

Every single non-electric car needs spark plugs. Keep these basic car parts in your shop at all times and you’ll have a steady bit of work helping people with this basic repair.

Wing Mirrors

If your car or truck has a close call, then the wing mirror is one of the most common parts that gets damaged. In minor accidents, wing mirrors often get swiped off by another motorist. They can also be damaged by vandals.

Wing mirrors are also fairly complex to require. Many of them feature complex wiring that untrained workers cannot replace. Every car will have different wing mirrors, so keep a supply in stock for the most common cars in your state.


Headlight bulbs need to replaced, on average, every five to seven years. However, if the car is used a lot for night driving, this number drops. Replacing headlight bulbs is easy: most customers will be happy to do it themselves.

Keep a stock of these important car parts on hand, and let your customers pick them out. You should also keep xenon lights in stock, as more and more vehicles use this kind of lighting.


Some drivers don’t realize that their car’s electrics require fuses like any other electrical system. The fusebox is usually found under the dash or in another, fairly hidden area on the car. Until something goes wrong, drivers don’t think to check for a bad fuse.

It’s important to have an excellent stock of fuses in your shop. However, it’s important to have a wide range of different fuses. Each car will require its own specific fuses: if they use one for another car, it could increase the risks of a car fire.

Air Filter

One of the most important motor vehicle engine parts for the engine’s health, a car’s air filter should be replaced once every 30,000 miles. If the car is driven on dusty roads or in dusty areas, the filter will need replacing sooner. If you live in a rural area of the country, or an area with a lot of dust, keep a good stock of air filters on hand for your customers.

Oil Filter

Oil needs to be changed regularly, but the oil filter needs to be changed too. If the filter isn’t changed, impurities can get into the engine and wreak utter havoc. As a result, you should be equipped as a one-stop-shop for any oil filter that your customer may need.

How We Can Help You Get These Important Car Parts

Sourcing these important car parts for your shop can be tricky. That’s where we come in. We offer fleet replacement services for the aftermarket parts industry and specialize in getting you exactly what you need.

Do you have any questions about our rates? Curious about how we can help you grow and better serve your customers? Then don’t hesitate to contact us today!