Designed to be mounted directly to a compatible fuel rail these adjustable fuel pressure regulators from Radium Engineering are compact to fit engine bays with limited space. The main regulator inlet port is AN -6 ORB and an adaptor is supplied to suit fuel rails with an AN -8 ORB port. The regulator also features 2 x 1/8" NPT take off ports which can be used for fuel pressure gauge, pressure sensors / switches etc. Blanking plugs are supplied if these ports are not used.Suitable for high flow EFI applications (tested to over 1400 litres per hour)Ideal for high performance enginesCompact design, ideal for engine bays with limited spaceCompatible with all gasoline fuels including ethanol blendsThe Radium Engineering fuel rail mounted fuel pressure regulator is supplied with an AN-6 360° swivel return port adaptor to suit different mounting configurations. The kit also includes 2 different diameters of return port orifices to enable matching fuel pump flow to the regulator. This allows t