This is a brand new (never used) Barry Grant 2-port, fuel pressure regulator. BG Fuel System's billet aluminum regulator eliminates the spring from the fuel flow path, reducing turbulence for smooth, steady fuel pressure. One 1/2 in. NPT inlet, two 3/8 in. outlets and a 1/8 in. pressure port. The BG 2-Port PLUS+ features a compact design with high volume capability. Ideal for single 4 barrel carburetors.