Holley 12-803BP Carbureted Bypass Fuel Pressure Regulator Adjustable fuel regulation from 4-1/2 to 9 psi Preset to 7psi 3/8” NPT ports (1 in, 1 out, 1 bypass or return) Used in systems with a return line back to the fuel tank Quieter fuel pump operation Fit type: Vehicle Specific
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