Fuel Filler Neck, 1984-1987 Chevrolet and GMC C/K Series Crew Cab & Fleetside Trucks, For Gasoline Models Only, 1 3/4 (.750) in. O.D. Inlet, 8 1/4 (.250) in. Overall Length, Steel, Black Epoxy Finish, Sold Individually|JEGS Fuel Filler Neck for 1984-1987 GM C/K Series Trucks [Crew Cab/Fleetside].