This is a reproduction fuel tank made to fit the 1965-1966 Impala, Bel Air and Biscayne models (except wagon). It is a 20 gallon (76 liters) capacity tank. It comes with an 8 inch filler neck, the passenger side vent tube, fuel sending unit lock ring and O-ring. The lock ring has a 1-3/4 inch gauge hole diameter. The tank measures 37-1/4 inches by 30 inches by 6-3/4 inches.