Abstract: A parts mapping system, a data storage media with computer executable instructions, and a method for mapping internal part numbers to manufacturer part numbers. In one embodiment, the parts mapping system includes an input device to allow input of an internal part number, a database of internal part numbers and manufacturer part numbers correlated to one another, and a processor. The processor is preferably adapted to determine whether the inputted manufacturer part number is stored in the database and generates a data set having at least one manufacturer part number stored in the database which is correlated to the inputted internal part number. The data set preferably includes plurality of manufacturer part numbers stored in the database which are correlated to a plurality of internal part numbers stored in the database, the plurality of internal part numbers being correlated to at least one manufacturer part number.