Understanding Car Parts: What Is an OEM, OE, or Third-Party Aftermarket Part?
It is not easy to separate the terms clearly. On the one hand, this is due to the way technical language has evolved. On the other hand, regulations at EU level, for example, use certain terms. And finally, it is no longer entirely clear which manufacturer produces which part and then sells it with which brand logo on the box. Here is a categorisation that is used at Emil Frey Autoteilewelt:
In simple terms, OEM car parts refer to spare parts that are sold with the logo of the car manufacturer and are therefore installed in the new vehicle. OEM stands for ‘Original Equipment Manufacturer’. In practice, even new vehicle parts no longer all come directly from the car manufacturer, but from closely co-operating suppliers who produce exclusively for one model. After all, many car brands only have a vertical range of manufacture of 25 per cent. OEM parts are authorised by the car brands for each individual model or year of manufacture.
OE car parts (original equipment) are parts that often come from the same well-known suppliers or sometimes even from the same assembly line, but bear the supplier's logo. The quality is the same as that of an OEM part, i.e. they follow the strict quality, safety and durability specifications of the car manufacturer. This is why they are also referred to as ‘original equipment quality’.
Third-party aftermarket parts offer a huge range. These suppliers have nothing to do with the car brand, nor are they suppliers. This says nothing about the quality, but non-genuine components often come from the Far East and concentrate on volume models and the lowest possible prices. Quality, durability and safety as well as exchange and complaint options for car workshops can be very wide-ranging.