FORD 2008-2010 POWERSTROKE 6.4L

You do not have a link list with a handle set to ford-2008-2010-powerstroke-6-4l, or you do and it's empty. Go ahead and create a link list called FORD 2008-2010 POWERSTROKE 6.4L on your Navigation page and populate that link list with links that point to collections, to see collections listed here. Make sure the link list also has a handle set to ford-2008-2010-powerstroke-6-4l.