Yes, we sell the HitchLock (8820048) housing as a replacement part. This doesn't come with lock cores, you can order those separate to match your existing locks. To order the lock housing click here. To order keys and lock cores click these links; LOCK CORE and KEY.
If you do not need to match the locks you can purchase a complete Hitch Lock (PN 8007235), includes keys and cores here.
Have additional questions? Let us know here, or by calling customer service at 888-925-4621 M-F from 7 to 4 PT