OEM Parts (Original Equipment)

They are sold through dealers. They match fit and specification. Some suppliers sell the same parts under their own brand. The term OE or OES is sometimes used for parts made by the same supplier that delivers to the car factory, but sold in its own packaging. Dealer parts are often the only option for coded electronic modules. Using the VIN when ordering ensures the part matches the car's exact build.

They follow the manufacturer's design and quality standards.

They are often more expensive. Some warranty repairs require OEM parts.