Standard Ignition PR451 Fuel Injection Pressure Regulator

Standard Ignition PR451 Fuel Pressure Regulator

Standard Ignition PR451 is a new fuel injection pressure regulator for gas systems with adjustable pressure control, a straight nipple orientation, and a reference port. It includes an O-ring and caution sheet, and it is built with a steel regulator body and silver finish for service replacement use.

Key Features

• Adjustable fuel injection pressure regulator for gas applications
• Steel construction with silver regulator finish
• Straight nipple orientation with 1 inlet and 1 outlet
• Reference port included for system connection
• Includes O-ring and caution sheet
• New replacement part, Standard Ignition PR451

Detailed Description

This fuel injection pressure regulator is built for Subaru fuel system service where stable fuel pressure control is required. Standard Ignition PR451 is listed for 2007-2009 Subaru Legacy, 2007-2009 Subaru Outback, 2008-2014 Subaru Impreza, and 2011-2013 Subaru Forester. It cross-references Dorman OE Solutions 800-563 for the same application.

Use PR451 when replacing a worn or leaking regulator on Subaru Impreza, Subaru Forester, Subaru Legacy, or Subaru Outback gas fuel injection systems. The adjustable design, reference port, and steel body support direct replacement service in the fuel delivery system.

Common Issues This Part Can Address

• Fuel pressure that is outside the specified range
• Hard starting caused by inconsistent fuel delivery
• Fuel odor or seepage from a failing regulator seal
• Rough idle related to unstable injector pressure
• Driveability concerns tied to poor fuel pressure regulation

Installation Notes and Tips

Verify the vehicle application before installation and confirm the fuel system layout matches the straight nipple and reference port configuration. Replace the O-ring during service, follow the caution sheet included with the part, and inspect surrounding fuel lines and connections for wear or contamination before reassembly.

Quality Assurance

Standard Ignition supplies this as a new replacement fuel injection pressure regulator for gas systems. The steel construction and application-specific fitment support dependable service on listed Subaru models, including Subaru Impreza, Subaru Forester, Subaru Legacy, and Subaru Outback.