I turned in my original core for 110 credit to get the duralast reman. The duralast gold was 300 with no core credit, which will be returned for a full refund. The bosch bought off amazon was 215 with no core charge or credit . I wish I would have bought the Bosch to begin with but i needed an alternator immediately.
So to answer your question, no, but it didn't matter because amazon was so cheap...