This two-piece steel quick-disconnect assembly installed between the stock 90' liquid fitting and the rear liquid/sight-glass hose. NOTE - This part is not used w/Original Air's reproduction liquid/sight-glass hose, part #13-104, #13-161 or 113-1050. Original Ford part #'s C1SZ-19B595-A/YF-252 Male end & C1SZ-19B596-A & YF-241 Female end. This assembly is made of zinc plated steel.