Part number for the drive belt tensioner is 6G9N 7739 CF. Seems to be obsolete from Ford, but there may be NOS around at a dealer, will see what I can find out for you.
The below lists an SKF part number, so if you go to a local SKF dealer like CBC bearings or the alike they may be able to get for you.
https://spareto.com/oe/6g9n7739cf