AEM's Universal Adjustable Fuel Pressure Regulator (AEM 25 302BK) is capable of supporting enough fuel flow for engines up to 1000 horsepower. Our universal AEM FPR is tapped to accept a -6 AN, or 9/16"x18 fittings and includes a 1/8 NPT port for a fuel pressure gauge or pressure sensor pick up. Inlet: 2 x -6AN (9/16-18) Outlet: -6AN - Gauge Port: 1/8 in. NPT - Black