This is a reproduction fuel tank made to fit the 1958 Impala and Chevrolet Passenger models (except wagons). It has a 16 gallon (61 liters) capacity tank. It comes with the filler neck, fuel tank sending unit lock ring and O-ring. The lock ring has a 1-5/8 inch gauge hole diameter. The tank measures 29-1/4 inches by 27-3/4 inches by 7-1/4 inches.