When our car is taken for maintenance or repair, some parts need to be replaced. At this time, the boss will ask us whether we want original parts or aftermarket parts. Original parts are expensive, but they have quality assurance; aftermarket parts are cheap, but they do not have warranty. At this time, we usually get tangled up, which one should we choose? What is the difference between original and aftermarket parts?

In fact, the accessories in the auto repair market are not only original and aftermarket parts, but also genuine parts, dismantled parts, refurbished parts, etc. There are many types and uneven quality. So what is the difference between these parts? Let’s analyze it today.

OEM

A car is made up of tens of thousands of parts, large and small, and car manufacturers do not have the ability to develop every part, so most parts need to be purchased from outside. The so-called original parts refer to those produced by the car manufacturer itself or authorized by professional parts manufacturers. They can be marked with the car manufacturer’s trademark and original part number and used to assemble cars, or supplied in the car brand’s proprietary after-sales channels (such as dealers).

OEM (original equipment manufacture) literally means that a manufacturer produces products and product accessories for another manufacturer according to its requirements. It is also called scheduled production or authorized OEM production. It generally refers to products produced by factories with very good qualifications. Both quality and after-sales service are very guaranteed. For the same original parts, the dealer selling price will be relatively higher.

Aftermarket

Aftermarket parts actually refer to accessories produced by manufacturers that are not authorized by the main engine manufacturer. The name of the manufacturer is engraved on the parts, and there is also its own trademark, but there is no car brand logo. Aftermarket parts are the most complicated type in the auto parts market.

But TSY can provide you with smarter, high-end aftermarket solutions that not only match the performance of OE genuine parts but can even surpass them—all at more competitive prices. Our engineers perform in-depth analyses of OE factory designs to pinpoint failure modes and identify opportunities for improvement. We use advanced 3D mechanical design software and cutting-edge 3D printing technology to create part prototypes, then subject them to rigorous real-world testing on our own vehicles. Each component is tested over thousands of miles to ensure unparalleled quality and durability. Once a part passes every test and meets our exacting standards, we move to mass production using premium materials—aircraft-grade aluminum, heavy-duty crimp rings, enhanced seals, top-brand rubber air springs, and polyurethane bump stops. TSY’s quality and manufacturing processes are ISO certified, guaranteeing exceptional performance and reliability.