This surge tank or coolant reservoir is for a Ford L8000 and is fabricated from aluminum.  It comes with a lifetime warranty against welding and crack defects.  This tank is made in Michigan. Please notice what direction the tube on the bottom points, shown in the picture, is straight, this is the only option. Cap included with the surge tank. Inlet size: Tank Fill Neck Outlet size: 1″ beaded tubing Hose beaded: yes Fitting sizes: (2) 3/8″ beaded tubing, (1) 1/2″ NPT w/ 1/2″ NPT sight glass, (1) 1/4″ NPT Material: 3003 Aluminum