Does anyone know if the '06/'07 F150 factory installed receiver hitches for the 2 different style bed are the same? What's the difference between a 7L3Z-17D826-B and 7L3Z-17D826-A receiver hitch?

 

The dealer ought to be able to tell you for sure as each number should give a list of what it fits. Usually a hitch from Reese fits alot of different styles so I'm thinking it's thew same here, should be. They often change the letters around for some reason, usually the numbers in the middle part make the difference, the 17d826,