Every week somebody asks us some version of the same question. Should I put factory parts on my car, or is aftermarket okay? It is a fair question, because the labels get thrown around loosely and the price difference can be real money. Here is what the terms actually mean, and how we decide what goes on your car.
What OEM, OE Quality, and Aftermarket Actually Mean
OEM stands for original equipment manufacturer. An OEM part is the same part your vehicle was built with, sold under the automaker's brand, usually through a dealership parts counter. It fits and performs exactly like the part it replaces, and it usually costs the most.
OE quality, sometimes called OE supplier, is the industry's open secret. Automakers do not make most of their own parts. They buy them from large suppliers, and many of those same suppliers sell the same or equivalent parts in their own boxes. An OE quality part is built to the same specifications as the factory part, without the automaker's logo on the box or the dealership markup on the invoice.
Aftermarket covers everything else, meaning any part made by a company other than the vehicle manufacturer. And that is where things get complicated, because aftermarket is not one level of quality. It is the entire range, from parts that outperform the originals to parts we would not put on a lawn mower.
Why Aftermarket Quality Is All Over the Map
Nobody polices the word aftermarket. The best aftermarket manufacturers engineer their parts to meet or beat the original specifications, test them hard, and back them with real warranties. At the other end of the market, some parts are built to hit a price, not a standard. A box that fits your car is not the same thing as a part that lasts on your car. A few examples of where the bargain bin bites:
- Cheap catalytic converters that fail emissions and throw check engine codes
- Bargain fuel pumps that fail early, which means paying to drop the fuel tank twice
- Cut-rate filters that let dust through or come apart inside
- Off-spec spark plugs that run rough and do not last
The frustrating part for drivers is that both the good part and the bad part can be called aftermarket, and both can look fine in the box. Telling them apart is our job, not yours.
How We Choose Parts at C&C
Our rule is simple. We match the part to the car, to how you drive, and to how long you plan to keep the vehicle. Quality aftermarket parts handle most repairs just fine, and that is what we use for a lot of everyday work like brake pads, struts, radiators, belts, and hoses. When a factory part is the right call, or when you simply want factory parts on your car, that is what we install.
Some parts get held to a higher bar, because the cost of a failure is too high. On fuel pumps and injectors we lean toward OEM or top tier aftermarket. Catalytic converters have to meet the standards your car requires, or you will be right back with a check engine light. Spark plugs get the exact type and heat range your engine was built for. If your car came with an AGM battery from the factory, an AGM battery goes back in. And when a vehicle's security system demands a factory part, we source OEM.
Fluids follow the same thinking. Transmission fluid and coolant have exact specifications, and putting in the wrong one can cause real damage. Your vehicle gets the spec it calls for, not whatever is on the shelf.
For the big jobs we have strong options behind us too. We are an authorized ACDelco service center for the Augusta area, and we offer Jasper engines and transmissions when a replacement makes more sense than a repair.
Where the Warranty Comes In
Parts choice and warranty go hand in hand. Most repairs we perform are backed by our 2-year / 24,000-mile warranty, which covers our labor and the parts we supply for 2 years or 24,000 miles, whichever comes first. The shop that did the work stands behind it, and covered repairs are also protected through the Certified Auto Repair Nationwide Warranty at participating shops when you are on the road.
That word most matters. Used parts and customer-supplied parts are not covered, and some customer-selected lower-cost parts cannot carry our full warranty. That is a big part of why we steer you away from the cheapest option on certain jobs. A part we cannot stand behind is not a part we want to install. Your service advisor will walk through exactly what is covered before any work begins.
The Bottom Line
There is no single right answer to OEM versus aftermarket. The right answer depends on the part, the car, and you. Our job is to lay out the options honestly, tell you where it makes sense to spend and where it does not, and install parts we are willing to stand behind. Have a repair coming up and want to talk through the options? Call any of our six shops or book an appointment online, and we will go through it with you.
