I am trying to verify the model of my '05 F-150 with 4.2 V6 in order to purchase a filter. I don't trust those door codes because my truck was supposed to have a limited slip rear and it did not. According to the window sticker the PO paid for a LS, but he did not get one. The diff tag did not have the code for LS.
The door code says A. I attached a photo of the tag on the transmission.

 

In 2005 the only automatic that would mate to a 4.2L was the 4R70W.

 

Thanks for your help.