Edelbrock Fuel Pressure Regulator #17401 features a unique design that allows it to be mounted directly to any fuel rail with female -6 ORB ports, which eliminates the hassle of locating a mounting place in the engine bay. This Fuel Pressure Regulator is non-adjustable and comes pre-set to make 58 PSI of fuel pressure. It features a compact push-in style design with a swivel style mounting bracket so that it can be clocked in various directions to fit your setup. This is a great addition to any Pro-Flo 4 EFI system!