REGULATOR 4-1/2 to 9psi HOLLEY BYPASS STYLE

The needle and seat assemblies that are installed in Holley Performance carburetors can sufficiently control fuel pressure up to about 7psi. If the fuel pump is putting out more than 7 psi, a regulator should be used to keep the fuel pressure within safe limits and avoid the possibility of flooding. Holley's 4-1/2 to 9psi adjustable bypass style fuel pressure regulator has 3/8f npt ports, 1 inlet and 2 outlet, complete with mounting bracket, and is for use when a return line is required, preset at 7 psi, not for use with a mechanical fuel pump.