This lightweight water neck is machined from billet aluminum. A compact modular design allows the body to be flipped so that the 1.5" hose outlet fitting can face left or right. Features a flange filler top which accepts a standard radiator cap, top and bottom O-ring seals, 1/2" N.P.T. rear port for temperature sender, and two 3/8" N.P.T. ports for cooling lines. Includes hardware. "Compact modular design allows the body to be flipped so that the 15" hose outlet fitting can face left or right "1/2" NPT rear port for temperature sender and two 3/8" NPT ports for cooling lines; Includes hardware" Features a flange filler top which accepts a standard radiator cap