HomeAir and Fuel Delivery > Fuel Injection System and Related ComponentsDelphi FP10481 Fuel Injection Pressure Regulator
Part #: FP10481

Delphi FP10481 Fuel Injection Pressure Regulator

12 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Subaru, Outback, Impreza, and Legacy
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Delphi Fuel Injection Pressure Regulator Overview

The Delphi FP10481 Fuel Injection Pressure Regulator is designed for precise fuel pressure control in Subaru vehicles. Engineered with durable metal construction, this regulator ensures consistent fuel delivery for models like the Subaru Impreza, Legacy, and Outback.

  • Metal construction for durability and reliability
  • Compatible with Subaru Impreza, Legacy, and Outback models
  • Non-adjustable design for stable system pressure at 44 psi
  • Push-in inlet type with a 0.43 inch (11.0 mm) diameter
  • Hose outlet type with 0.35 inch (9.0 mm) diameter
  • Single inlet and outlet ports for straightforward installation
  • Bolt mounting type for secure attachment

Technical Details and Specifications

The Delphi FP10481 fuel injection pressure regulator is constructed entirely of metal, providing strength and resistance to wear in demanding engine environments. It features a push-in inlet port measuring 0.43 inches (11.0 mm) in diameter and a hose outlet port of 0.35 inches (9.0 mm). The regulator maintains a fixed system pressure of 44 psi, ensuring consistent fuel flow without the need for adjustment. With one inlet and one outlet port, installation is simplified, and the bolt mounting type secures the regulator firmly in place. This part does not include a gauge port.

Compatible Subaru Models and Applications

This fuel injection pressure regulator is compatible with several Subaru models, including the Impreza, Legacy, and Outback. It is specifically designed to meet the fuel system requirements of these vehicles, ensuring proper fuel pressure regulation and engine performance.

Common Issues Addressed by the FP10481 Regulator

  • Irregular fuel pressure causing engine hesitation or stalling
  • Fuel leaks due to worn or damaged pressure regulators
  • Poor fuel economy resulting from inconsistent fuel delivery
  • Engine misfires linked to faulty fuel pressure regulation
  • Check engine light triggered by fuel system pressure faults

Installation Notes and Tips

Installation of the Delphi FP10481 requires basic mechanical skills and appropriate tools. Ensure the engine is cool before beginning work. The bolt mounting type allows for secure attachment; verify that the mounting surface is clean and free of debris. The push-in inlet and hose outlet connections should be checked for proper fit and sealed to prevent leaks. Since this regulator is non-adjustable, no pressure tuning is necessary after installation.

Quality Assurance and Warranty

Delphi manufactures the FP10481 fuel injection pressure regulator to meet OEM standards for fit, form, and function. The metal construction supports long-term durability under normal operating conditions. While specific warranty details are not provided here, Delphi parts typically come with a limited warranty covering defects in materials and workmanship.

BrandDelphi
Part NumberFP10481
AdjustableNo
Gauge PortNo
Inlet Port Diameter0.43
Inlet Port Diameter11.0
Inlet Quantity1
Inlet TypePush In
MaterialMetal
MaterialMetal
Mounting TypeBolt
Outlet Port Diameter0.35
Outlet Port Diameter9.0
Outlet Quantity1
Outlet TypeHose
System Pressure44

This part fits 12 vehicles. Search below:

YearMakeModelPositionNotes
2004SubaruOutbackN/A
2003SubaruOutbackN/A
2002SubaruOutbackN/A
2001SubaruImprezaN/A
2001SubaruLegacyN/AManual Trans
2001SubaruOutbackN/A
2001SubaruOutbackN/AManual Trans
2000SubaruImprezaN/A
2000SubaruLegacyN/AManual Trans
2000SubaruOutbackN/AManual Trans
1999SubaruImprezaN/Awith California Emission System
1999SubaruLegacyN/Awith California Emission System

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

22670 AA221241725G1322800-576PR4056PR464

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.