REGULATOR 1-4psi HOLLEY

Holley's 1 to 4psi adjustable fuel pressure regulator has 3/8 inch npt female ports, 1 inlet and 2 outlet, complete with mounting bracket. Engines using Dellorto and Weber carbs etc only need 1 - 4 psi of fuel pressure and most idle problems with these carbs are to do with float level or fuel pressure problems. Can not be used as a return style or used with Methanol.