Original Equipment (OE) parts are the parts that are originally installed in a vehicle when it is manufactured. These parts are made by the same manufacturer that made the parts that were originally installed in the vehicle.
Original Equipment Manufacturer (OEM) parts are parts that are made by the same manufacturer that made the original parts, but they may not have been installed in the vehicle when it was manufactured. These parts are often used to replace OE parts that have failed or been damaged.
Aftermarket parts are parts that are made by companies other than the original manufacturer of the vehicle. These parts are designed to fit and function the same as the OE parts, but they may not be of the same quality. They are often available at a lower price than OE or OEM parts.
