Delphi FP10415 Fuel Injection Pressure Regulator

Fuel Pressure Control for Subaru Applications

The Delphi FP10415 fuel injection pressure regulator is built for Subaru fuel systems that require stable pressure control and OE-style fitment. With metal construction, a push-in inlet, hose outlet, and bolt-on mounting, it supports consistent fuel delivery for Subaru Legacy, Forester, and Impreza applications.

Delphi draws on OE heritage and decades of supplier experience to produce aftermarket parts with the same engineering focus used for original equipment programs. The FP10415 is a direct-fit fuel injection pressure regulator for 1990-1999 Subaru Legacy, 1998 Subaru Forester, and 1993-1998 Subaru Impreza applications.

Key Features

• Delphi FP10415 fuel injection pressure regulator
• Metal body construction for fuel system durability
• Fixed 39 system pressure specification
• 1 inlet with push-in connection
• 1 outlet with hose connection
• Bolt-on mounting type
• No gauge port and non-adjustable design
• Compatible with Subaru Legacy, Forester, and Impreza fuel injection systems

Detailed Product Overview

The FP10415 is designed to regulate fuel pressure at the specified 39 system pressure level, helping maintain proper injector performance and fuel delivery consistency. Its inlet and outlet dimensions, along with the push-in inlet and hose outlet design, support OE-style integration in Subaru fuel injection systems. This part cross-references Gates 21845 for the same application.

Use the Delphi FP10415 when servicing Subaru Legacy, Subaru Forester, or Subaru Impreza fuel systems that require a metal, bolt-mounted pressure regulator with a single inlet and outlet configuration. The part number FP10415 is also a useful reference when matching replacement fuel pressure regulators by application.

What This Part Helps Address

• Fuel pressure that is too high or too low at the rail
• Rough idle caused by unstable fuel delivery
• Hard starting related to pressure regulation issues
• Rich or lean running conditions tied to fuel pressure imbalance
• Fuel system drivability problems on Subaru Legacy, Forester, and Impreza models

Installation Notes and Tips

Verify inlet and outlet connection style, mounting location, and system pressure before installation. Confirm the vehicle application against the listed Subaru fitment: 1990-1999 Subaru Legacy, 1998 Subaru Forester, and 1993-1998 Subaru Impreza. The FP10415 uses a push-in inlet and hose outlet, so matching the existing fuel line configuration is important for proper installation.

Quality Assurance

Delphi builds aftermarket fuel system components using OE experience and supplier knowledge developed through work with major automakers. The FP10415 reflects that OE-focused engineering approach for Subaru fuel injection service.