If you purchased the wrong used auto part or the part does not fit, you can bring the auto part back for an exchange within 30-days of purchase (the purchase of a 30 or 90 day warranty may be required at some locations, check your local store's prices page for details.) You must have the original receipt dated 30-days or less, and the auto part must be marked. Be sure your auto parts are marked at the time of purchase, in case you need to return them. Ask a ESTEYNELLY Pick Your Part associate for more information.