1966 GMC I1500 4.1L 6 Cyl 1BBL. 1965 GMC I1500 3.8L 6 Cyl 1BBL. Notes: Air Cleaner Mounting Gasket -- Paper. Ensure Proper FitTo confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in the Compatibility Table.
