OEM parts, or original equipment manufacturer parts, are automotive parts that are made specifically to replace the original product. While OEM parts aren’t necessarily made by the original manufacturer, they are designed and built to the same specifications. 

Aftermarket parts are replacement parts that are intended to only be similar to the quality and design of the original parts. Many different companies make many different aftermarket parts for many different types of vehicles. 

OEM parts offered enhanced quality over aftermarket parts because they were made distinctly to replace and perform as the original part. Because these replacement parts are specifically made for certain makes and models, you will have fewer part numbers and variations to sift through, making OEM parts easier and less complicated to find. OEM parts are also backed by a warranty. This can give you the peace of mind that should anything go wrong with part, it will be covered.

While aftermarkets tend to be cheaper because of greater and more varied supply, there are also several drawbacks when it comes to the overall value, quality, and safety of your vehicle. With aftermarket you get you pay for. While they make perform as intended, there is no guarantee. Quality can vary greatly between brands and between products. Aftermarket parts are also not backed by a warranty.