FX-R Fuel Pressure RegulatorGFBs 8060 FX R race version Fuel Pressure Regulator is capable of flowing enough fuel for up to 1500hp, and features two 6AN ORB (O Ring Boss) inlet ports, two 1 8 NPT gauge ports, and one 6AN ORB outlet port. The two inlet ports can be used for single or dual rails, and the two gauge ports allow the use of both a mechanical gauge and electronic pressure sensor. 2 x 6AN ORB inlet ports 2 x 1 8 NPT gauge ports 1 x 6AN ORB outlet port 1 x 1 16 NPT