This is a reproduction fuel tank made to fit the 1967-68 Camaro. It has a 18 gallon (68 liters) capacity tank. It comes with the fuel tank sending unit lock ring and O-ring. The lock ring has a 1-3/4 inch gauge hole diameter. It does not come with the filler neck. The tank measures 39-3/8 inches by 20-7/8 inches by 7-3/4 inches.