Compatible Years: 1973 1974. Part Type: Fuel Tank Cap. OE Equivalent Fuel Tank Cap. 1973 GMC K15/K1500 Pickup Engine: 4.1L L6 GAS;BedType: Fleetside; With Evaporative Emission System;. 1973 GMC K15/K1500 Pickup Engine: 4.1L L6 LPG;BedType: Fleetside; With Evaporative Emission System;.
