Holley Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley. They are precision machined from 6061-T6 billet aluminum for strength and durability. They feature a black bright dip anodized body and a clear bright dip anodized top for corrosion resistance and good looks. Holley Billet Fuel Pressure Regulators are available in a variety of configurations. Product Features:Allows Adjustment From 15-65 PSI + Boost ReferenceCNC Machined Billet AluminumRegulates Extreme Flow Volumes From Racing Fuel SystemsRegulates High Fuel Demand For Naturally Aspirated Race AppsO-Ring Style Fittings Incl. To Adapt To Steel Braided Fuel LinesEasy Installation