Standard Ignition PR464 Fuel Injection Pressure Regulator

Fuel Pressure Control for Subaru Applications

Standard Ignition PR464 is a new fuel injection pressure regulator for gas systems with a return-style layout. It is adjustable, uses a steel regulator body with steel and rubber construction, and includes a reference port for pressure monitoring. This regulator is a direct-fit option for select Subaru Outback, Impreza, and Legacy applications.

Key Features

• Adjustable fuel injection pressure regulator for gas systems
• Return-type design with 1 inlet, 1 outlet, and 1 port
• Steel regulator body with steel and rubber material construction
• Bolt-mount installation with straight nipple orientation
• Silver finish for the regulator and part surface
• Reference port included for diagnostic and tuning checks
• Standard Ignition PR464 replacement part number

Detailed Description

Standard Ignition PR464 is built to regulate fuel pressure in return-style fuel injection systems. Its adjustable design supports pressure setup and system service, while the straight nipple orientation and bolt-mount configuration match the needs of select Subaru fuel delivery layouts. This part cross-references Dorman OE Solutions 800-576 for the same application. Use PR464 when replacing a worn or unstable fuel injection pressure regulator on 1999-2004 Subaru Impreza, 1999-2004 Subaru Legacy, and 2000-2004 Subaru Outback applications.

What It Helps Resolve

• Fuel pressure that is too high or too low
• Rough idle caused by inconsistent fuel delivery
• Hard starting related to pressure regulation issues
• Fuel smell or rich-running conditions from regulator failure
• Driveability problems tied to unstable injector pressure

Installation Notes and Tips

Verify the vehicle uses a gas, return-type fuel system before ordering. Confirm the Subaru model year and emissions configuration, especially for 1999 Impreza and 1999 Legacy vehicles with California emissions. Match the inlet, outlet, port count, and bolt-mount style to the original regulator before installation. Standard Ignition PR464 is intended for direct replacement on the listed Subaru applications.

Quality Assurance

Standard Ignition supplies PR464 as a new replacement fuel injection pressure regulator for service use. The steel-and-rubber construction, adjustable regulator design, and included reference port support accurate fuel system diagnosis and replacement on the specified Subaru applications.