This is for the female end of the two-piece male/female quick-disconnect assembly installs between the 90' liquid fitting that connects to the filter-drier and the liquid/sight-glass hose. NOTE - This part is not used w/Original Air's reproduction liquid/sight-glass hose, part #13-104 or #13-161. Original Ford part #'s C1SZ-19B596-A & YF-241.