The Tailgate Mirror fits on all F150's with the exception of some Raptors.
Below the Tailgate Mirror installed on a 2018 F150 XLT
On the left with the tailgate up for easier viewing (also easier to install)
On the right the screen view with and without the Tailgate Mirror
This video shows the tailgate mirror installed on a 2012 F150 from both outside and inside the truck