I got this adapter off Amazon $15.95 and it works perfect on my 2021 F250. Copy and paste in the Amazon search

Edward Tools Trailer Hitch Reducer Sleeve 2.5” to 2” - Insert Tow Hitch Adapter to Convert Hitch from 2.5” to 2” - Heavy Duty Steel Tube Construction - for Truck or Trailer

 

Ford part number on mine is HC3Z-19H282-A and it has a measurement of 2inches from center of pin hole to where flange meets end of 2 1/2 receiver. My guess is your measurement will be 3/4 inch longer. I do remember mine was the more expensive of the two ford had. My guess is yours is the cheaper one. I would make sure I can take back whichever one I got. And the VIN number seemed to help. It may be my gas 7.3 gas came with a 2 1/2 receiver and the 6.7 diesel came with a 3 inch receiver. 3 inch could be 2 3/4 inch from pin to end and 2 1/2 receivers have 2 inch measurement.