AFCO Aluminum radiators allow your car to remain at a constant temperature, which means that power delivery is more consistent. The uniformity of an all-aluminum construction radiator allows for the best pound for pound heat transfer characteristics. 100% Aluminum construction (no epoxy) Furnace brazed core Tanks are made of .080” 3003 aluminum for strength and durability TIG welded by skilled craftsmen in the USA Factory pressure-tested Filler necks feature screw-in bleed – won't crack or leak with age