This is a reproduction fuel tank made to fit all of the 1968-69 Nova models. It has a 18 gallon (68 liters) capacity tank. It comes with a filler neck, the fuel tank sending unit lock ring and O-ring. The lock ring has a 1-3/4 inch gauge hole diameter. The tank measures 38 inches by 19-3/8 inches by 7-3/8 inches.