Delphi FG0866 Fuel Pump Module Assembly

Delphi FG0866 Fuel Pump Module Assembly

The Delphi FG0866 fuel pump module assembly is a standard replacement for in-tank gasoline fuel delivery systems. Built from Delphi’s OE heritage and supplier experience, it combines the pump, fuel level sender assembly, gasket or seal, and strainer for a direct-fit service solution.

Compatible with 2003-2004 Lincoln Navigator applications, this Delphi fuel pump module assembly supports consistent fuel delivery and accurate tank level reporting. It is a practical choice when replacing a worn pump on a Lincoln Navigator and restoring normal engine fuel supply.

Key Features

• In-tank electric fuel pump module assembly for gasoline applications
• 12.0-volt design with a maximum pressure rating of 80.0
• System pressure rating of 44 psi and average flow rating of 40
• Fuel level sender assembly included for tank level signal restoration
• Gasket or seal included; strainer included
• Quick-connect outlet type with 2 outlets and 4-pin male terminals
• Standard replacement part for service on select Lincoln Navigator models

Detailed Description

Delphi FG0866 is an in-tank fuel pump module assembly engineered for gasoline fuel systems. It features an electric pump, external strainer, quick-connect outlet, and integrated fuel level sender assembly, making it a complete service component for restoring fuel delivery and sender function. The module is designed for 2003-2004 Lincoln Navigator fitment and uses a pin-style, 4-terminal male connection.

Delphi’s OE background is reflected in the part’s construction and application coverage. The FG0866 is a direct replacement option for Lincoln Navigator owners looking for a fuel pump module assembly that matches the vehicle’s in-tank configuration and supports normal fuel system operation. This part number, FG0866, is also referenced in aftermarket interchange listings for the same application.

Common Problems This Part Can Address

• Hard starting caused by weak or failing fuel pressure
• Engine stalling from inconsistent fuel delivery
• Fuel gauge readings that no longer track tank level correctly
• Loss of pump prime or noisy in-tank pump operation
• Fuel starvation under load in a worn fuel system

Installation Notes and Tips

Fits 2003-2004 Lincoln Navigator, N/A. Clean the fuel tank before installing the fuel pump to prevent future seal problems. Verify connector style, outlet configuration, and tank access before installation. The FG0866 uses an in-tank layout with a gasket or seal included, so proper sealing and tank cleanliness are important for reliable service.

Quality Assurance

Delphi builds this fuel pump module assembly using OE experience and application knowledge developed through long-term supplier work with major automakers. The FG0866 is a standard replacement part designed to meet the needs of the listed Lincoln Navigator applications.