Hyundai 31380-3K000 Regulator-Fuel Pressure

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For 1999-2005 return-type fuel systems, relieve fuel system pressure, disconnect the battery's negative terminal, vacuum hose, and fuel return line. Remove the regulator from the fuel rail. If reusing, check the O-ring condition. For 2006 and later returnless systems, the regulator is part of the fuel pump assembly, which includes the pump, fuel level sender, filter, and regulator. The regulator is not sold separately, so the entire assembly must be replaced. Check local auto parts stores for updates on regulator availability.