If you purchased a Ford Motorcraft part from a Ford Parts counter and the Actual part had a different complete number from what was stamped on the box then it should be taken back to Ford. They would appreciate this being brought to their attention.The part number on the old part and the part number etched on the new part are the same (prefix suffix and all!)
The part number on the box is the new/different part number that is recommended by Ford to replace the solenoid pack with.
My truck falls in the date range where Ford recommends the new part number…….
The new part ohms out correctly so I guess it be OK it just puzzles me. I tend to think these things through too much probably! A lot of people would not have looked at the actual part and seen that the numbers were different.