Delphi FP10519 Fuel Injection Pressure Regulator

Fuel Pressure Regulation for Toyota Applications

The Delphi FP10519 fuel injection pressure regulator is built for Toyota fuel delivery systems that require stable pressure control and OE-style fitment. It is a metal, hose-inlet, threaded-outlet regulator with a single inlet and single outlet, made for direct replacement service on select Toyota 4Runner and Toyota Pickup models.

With Delphi OE heritage behind it, this fuel injection pressure regulator reflects the company’s long history supplying original equipment to major automakers. The FP10519 is a straightforward replacement for restoring consistent fuel pressure in 1988-1995 Toyota 4Runner and 1989-1995 Toyota Pickup applications.

Key Features

• Metal construction for fuel system durability
• Hose inlet and threaded outlet configuration
• Non-adjustable design for factory-style pressure control
• Single inlet and single outlet layout
• No gauge port
• Direct replacement for select Toyota fuel injection systems
• Delphi FP10519 part number for easy identification

Detailed Description

The Delphi FP10519 fuel injection pressure regulator is engineered for vehicles that need accurate fuel pressure management at the rail or fuel delivery circuit. Its non-adjustable design matches factory-style operation, while the metal body supports dependable service in demanding underhood conditions. This part is a practical choice for owners searching for a fuel injection pressure regulator for 1989-1995 Toyota 4Runner, 1989-1995 Toyota Pickup, and 1988 Toyota 4Runner or Pickup fuel pressure regulator applications.

This part cross-references Beck/Arnley 158-0252 and Gates 21872 for the same application. The Delphi FP10519 also aligns with common interchange references used in Toyota fuel system repair.

What It Helps Address

• Fuel pressure that is too high or too low
• Hard starting caused by inconsistent fuel delivery
• Rough idle related to pressure regulation issues
• Fuel mixture problems tied to unstable injector pressure
• Driveability concerns in Toyota 4Runner and Toyota Pickup fuel systems

Installation Notes and Tips

Verify the inlet and outlet style before installation: this regulator uses one hose inlet and one threaded outlet. Confirm the vehicle’s fuel system configuration and match the part number FP10519 to the original regulator before replacement. Because this unit is not adjustable, factory-spec pressure control depends on correct application selection and proper installation.

Quality Assurance

Delphi draws on more than 100 years of OE experience and supplier knowledge built from original equipment development. That OE background is reflected in the FP10519 fuel injection pressure regulator for Toyota 4Runner and Toyota Pickup service.