1955 GMC S300 4.1L 6 Cyl. 1956-1959 GMC S300 4.4L 6 Cyl. Notes: Carburetor Mounting Gasket. Position:Carburetor To Intake Manifold. Validated for fit, form and function. Ensure Proper FitTo confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in the Compatibility Table.