Add to Favorite Sellers. 25-305BK AEM Universal Adjustable Fuel Pressure Regulator. AEM High Capacity Universal Adjustable Fuel Pressure Regulator. Inlet: 2 X -6 (9/16-18) Outlet: -6 (9/16″-18), Gauge Port: 1/8″NPT, Vacuum Hose: 5mm (3/16″), and Universal Mounting Bracket with Four (4) 10-32×1/2″ Screws. Universal fuel pressure regulator adapts to virtually any vehicle. Longer spring for […]