Compatible Years: 1977 1978. Part Type: Fuel Tank Cap. 1977 Ford F-350 Engine: 4.9L L6 GAS;BedType: Fleetside; With Evaporative Emission System; With Cab Tank;. Locking Fuel Tank Cap. 1977 Ford F-350 Engine: 5.8L V8 GAS;BedType: Fleetside; With Evaporative Emission System; With Cab Tank;.
