Original Equipment Manufacturer (OEM) Parts / Original Equipment (OE) Parts are referred to as Original Equipment Manufacturer collision replacement parts, Original Equipment collision parts, or simply OE parts, these parts are designed by your vehicle manufacturer and are produced to the same specifications and tolerances as the parts on the vehicle when it was manufactured. These parts meet stringent requirements for fit, finish, structural integrity, corrosion protection and dent resistance. They are the only parts proven during vehicle development to deliver the intended level of protection as a whole system.