Thank you for your question. The Delta 51751 shower unit slide mechanism is part number, BAS4BX. Here is a link to the part:
You can usually find Delta faucet parts at any dealer that sells Delta faucets. Some good places to check can be found on our website under Where To Buy.
To order parts directly from Delta, you may call the toll-free Delta Help Line at 1-800-345-3358. We accept Visa or MasterCard for parts orders over the telephone.
Date published: 2018-08-24