Looks like a pretty standard 3.5/3.7 water pump to me. Done LOTS in the last couple of years. If I recall correctly, the original pump uses a 7 blade impeller while the replacement uses 11. I MIGHT have even posted pics here a while back. For what it's worth, you don't need to drop the powertrain on an Explorer to remove the timing chain cover like you would on a Edge/MKX.
ON EDIT: I just read your other post in the Prior Approval ESP thread. In those kinds of situations, your best bet is to get your service manager to sign off on ALL MT time you need, for disassembly diagnosis to satisfy the Gods at Prior Approval, failing which you should just get him to internal the time you need to cover it, then just claim your base labor ops for whatever repair you are approved for. I know how much ESP sucks, BTDTGTTS,