When a dealer replaces a part, what is the most correct procedure regarding the old part?

In the context of automotive service and repair, the most appropriate procedure when a dealer replaces a part is to offer the old part to the consumer. This practice aligns with transparency and customer rights, allowing consumers to see the replaced part and verify that it has indeed been replaced. It fosters trust between the dealer and the consumer, as it ensures that the consumer can make informed decisions regarding the repairs made on their vehicle. By offering the old part, the dealer respects the customer's right to have access to information about the work performed, including any evidence related to the repair. This also helps in establishing good customer relations and can potentially influence repeat business and referrals.