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That is the Motorcraft and Ford number for the IPR. Same part under different number. I don’t have a picture of the 7.3 on me ATM but her is one for a 6.0 and you can see both.
That one looks like a Ford number, the other one not so much.
When you look it up on a Ford Parts site it comes up as a ford part. My search Foo is not strong and I just can't link it to a 7.3 on a Ford site. Everywhere I see it on aftermarket sites says it fits 95 to 03.