Proflow Fuel Pressure Regulator, EFI Economy Black, Billet 40-65 PSI, -06AN Ports - PFEFS13129Part Number: PFEFS13129 Proflow's return or bypass, Billet fuel pressure regulator provides serious bang for your buck. CNC machined from lightweight billet aluminum, the internal spring and diaphragm are composed of high quality materials to guarantee consistant and reliable performance. It is adjustable from 40 75 PSI, features a boost reference port, and is available in multiple finishes. Specifications Pressure Range 40 75 PSI Regulator Style