2011-2013 Grand Cherokee Mopar part number 82212157 (Rock Rails)
Just mounted these on my 2015 JGC altitude. So they do fit with out modifying the part or my JGC. They are a pain to mount, took forever. So if you a dealer that will put them on and quotes you 2 hours labor as I have seen other people have posted in other threads I'd let them do it.