This U.S.-Patented design offers a slick solution for concealing the unsightly radiator overflow tube, giving your setup a sleek and clean appearance. The radiator neck is specifically designed to be recessed into the tank, allowing the overflow tube to travel inside the tank and exit through a remotely mounted barb. This setup effectively hides the overflow tube! The kit includes a billet aluminum filler neck, an unbent 18-inch tube, and a billet barb, and is intended to be welded into custom-made radiator tanks.

Please Note: the metal tangs that secure a radiator cap to this filler neck must be no wider than 1/2". Custom designed cap that matches this filler neck, see part number 69522.