Abstract: The invention provides spare parts information to a buyer over a communication network. Electronic spare parts inventory information is transmitted to an information processor from a plurality of surplus spare parts sellers that represent at least one spare part available for sale. Spare parts buyers transmit demand information representing demand for at least one spare part and the information processor matches the demand with the electronic inventory information. When a matched spare part is located, the information processor determines whether the part is available according to rules set forth from the surplus spare parts sellers. If the matched parts are available, the information processor provides electronic spare parts information representing the matched and available spare part to the spare parts buyer.