Please make sure size and profile match your current unit and gasket. True MAG GASKET, 23-9/16 X51-1/8 GJ For GDM12 - New version 929091 Please make sure size and profile match your current unit and gasket. True MAG GASKET, 23-9/16 X51-1/8 GJ For GDM12 - New version 929091