Ford 460 Remflex 3018 Exhaust Manifold Gaskets Square Port 1988 - 1998 # REM3018Ford 460 Remflex 3018 Exhaust Manifold Gaskets Square Port 1988 1998 # REM3018 Ford 460 Remflex 3018 Exhaust Manifold Gaskets Square Port 1988 1998 1 2 inch width x 1 7 16 inch height Square Port; Ford V8 460 ('88 '98), 1 1 2" x 1 7 16" Square Port, Header Applications, 2 Set Heating and cooling of the exhaust system causes header and manifold flanges to warp resulting in gaps between the head and header which Remflex exhaust gaskets seal completely