A system for automatically replacing loaner parts within a loaner system to prevent loaner system callback. In response to selecting a loaner system within loaner inventory data, it is determined whether the selected loaner system is required to be returned based on a target return date for the selected loaner system. In response to determining that the selected loaner system is not required to be returned, a notification is automatically generated and sent to a customer to return expiring loaner parts within the selected loaner system based on loaner part rules. A part replacement order is automatically generated for replacement loaner parts for each of the expiring loaner parts. Then, the replacement loaner parts are automatically shipped to the customer to replace the expiring loaner parts to prevent callback of the selected loaner system.