2002 F-350 SD, Crew Cab, SRW, 7.3L 4WD...
I noticed today at the car wash, the door seal on the passenger side front door (the one at the top and front of the door jamb) was kind of flopping around. I also noticed that for half the distance up the windshield, the door seal was UNDER the windshield gasket, and then on TOP the other half. When I went to the other side, it was EXACTLY OPPOSITE.
The Ford part number is 51222, but it would seem to me it SHOULD be UNDER the windshield gasket so water sheds around it and over the door.
The seal looks pretty bad, and I will likely get a new one, and I also have to replace the windshield, but I wanted to see which way everyone's seal is supposed to be.
Here's what the stripping looks like now: