The overflow tank is engineered for optimum fitment and function. Once the liquid gets to a certain level, the built-in long tube that extended into the container will spills out to prevent leakage with the bottom overflow vent. The overflow tank connected with the radiator is adequate to catch any overflowing coolant, which is able to stop loss of coolant and prevents pulling air into system when cooling off. Made of high quality aluminum , polished surface; Reliable and durable, rust resistant and corrosion resistant; Product including: 1 X overflow tank, 1 twist-in cap, mounting bracket & hardware; Main dimension: 3" cylinder diameter, 10" tank body length; 14oz Capacity, which is universal for most hot rods and classic engines, like GM, Che-vy, GMC, Cadi-llac, Pon-tiac, Bui-ck, Fo-rd, Chry-sler, Do-dge, etc