The new 40-gallon in-bed auxiliary fuel tank system from Transfer Flow has an exclusive design that makes it compatible with almost any full-size diesel truck! The large tank operates with Transfer Flow’s automatic transfer TRAX 3 technology. For safety, fuel is pumped (not gravity-driven) from the auxiliary tank to the main tank. For convenience, the dash-mounted LCD display shows the percentage of fuel in each tank while also informing you when a fuel transfer is in progress. This Transfer Flow fuel tank is manufactured from American-made 14-gauge aluminized steel for top-notch durability and strength. It's also powder-coated for a durable satin black finish, and comes complete with all parts needed for installation and use! For more information, call 800-442-0056 or visit www.transferflow.com