DIESELR Billet Aluminum Diesel Sump W/ Integrated Return (Universal)Billet Diesel Sump with Return Your fuel system is only as strong as its weakest point. If youre tired of tank issues and unreliable pickup, this billet diesel sump with return gives you the fix. Built from CNC machined aluminum, its designed to eliminate starvation problems and give your aftermarket system the cleanest return line possible. This sump is fully compatible with FASS, AirDog, and other return style fuel systems. No more dropping the tank