Delphi FP10578 Fuel Injection Pressure Regulator

Fuel Pressure Control for Toyota Land Cruiser

Delphi FP10578 is a fuel injection pressure regulator built for precise fuel system control in select Toyota Land Cruiser applications. It uses a metal body, push-in inlet and outlet connections, and a bolt-on mounting style for a direct replacement approach on 1988-1992 Toyota Land Cruiser models.

Fits 1988-1992 Toyota Land Cruiser, N/A. This Delphi FP10578 fuel injection pressure regulator is specified for a 39 system pressure setup and is built from OE-focused engineering knowledge drawn from Delphi’s long history supplying automakers.

Key Features

• Fuel injection pressure regulator for air and fuel delivery systems
• Metal construction for durability in engine bay conditions
• Push-in inlet and outlet ports for the specified fuel line connection style
• Bolt mounting type for secure installation
• Non-adjustable design set for 39 system pressure
• Single inlet and single outlet configuration
• Delphi FP10578 replacement part number for catalog and service matching

Detailed Description

Delphi FP10578 is engineered for fuel pressure regulation in the fuel injection system, helping maintain the correct pressure level required by the engine management system. The regulator features a 0.43 in. (11.0 mm) inlet port diameter and a 0.28 in. (7.0 mm) outlet port diameter, with push-in inlet and outlet types for the specified application. Its metal construction and bolt-on mounting support a service replacement that follows the original equipment style used on select Toyota Land Cruiser models.

For buyers searching for a Toyota Land Cruiser fuel injection pressure regulator, Delphi FP10578 provides a direct-reference option for 1988-1992 Toyota Land Cruiser service work. This part cross-references Dorman - OE Solutions 800-200 for the same application.

Common Issues This Part Can Address

• Fuel pressure that is outside the specified 39 system pressure range
• Hard starting caused by unstable fuel delivery
• Rough idle related to inconsistent injector pressure
• Fuel mixture problems tied to regulator wear
• Fuel system performance loss from a failing pressure regulator

Installation Notes and Tips

Confirm the inlet and outlet port sizes, push-in connection style, and bolt mounting layout before installation. Verify that the fuel system is specified for 39 system pressure and match the regulator to the vehicle’s original configuration. Inspect surrounding fuel lines and sealing surfaces during replacement to help ensure proper fitment on 1988-1992 Toyota Land Cruiser applications.

Quality Assurance

Delphi draws on more than 100 years of OE experience and supplier knowledge from work with major automakers. That OE heritage is reflected in the design and application focus of FP10578, making it a service part built around original-equipment expectations for fuel system control.