Sierra 18-0183-1 Exhaust Manifold Gasket for Mercruiser, OMCSierra Exhaust Manifold Gasket for use on Mercruiser and OMC Stern Drives. Fits MCM/MIE Ford V-8 engines; Use With: 18-1996 Manifold; 18-1998-1 Manifold; 18-1962-1 Manifold; 18-1938 Riser; Interchangeable with: Barr; MC47-27-73866; FM 47 0000; GLM; 33790; Mallory; 9-61420; Mercruiser Stern Drive; 27-73866; 27-54566; OMC Stern Drive; 908717; 3852455; 3853742; 916262; Osco; FL-GH; Pleasurecraft; RM0007; Volvo Penta; 3853742; 3852455;