Sparta PN4003 Fuel Pump Hanger Assembly

Fuel Pump Hanger Assembly for Explorer and Mountaineer

Sparta PN4003 is a specific-fit fuel pump hanger assembly for select Ford and Mercury SUVs. It combines the in-tank electric fuel pump, fuel sending unit, strainer, gasket/seal, and float arm in one standard replacement assembly for gas applications.

Built with a metal hanger and turbine-style pump design, PN4003 is made for 12-volt systems and supports the fuel delivery and level-sending functions needed on higher-mileage, earlier model vehicles. This Sparta fuel pump hanger assembly is a direct-fit service part for 1999-2001 Ford Explorer, 2001 Ford Explorer Sport, 2001 Ford Explorer Sport Trac, and 1999-2001 Mercury Mountaineer applications.

• Specific-fit fuel pump hanger assembly for select Ford and Mercury vehicles
• Includes fuel pump, fuel sending unit, float arm, strainer, and gasket/seal
• In-tank electric pump with turbine design
• 12.0-volt gas fuel system application
• Metal construction with quick-connect outlet
• Average flow rating: 21.0; maximum pressure: 80.0
• 7-terminal connector with female connector and male terminals

Detailed Product Overview

Sparta PN4003 is engineered as a standard replacement fuel pump hanger assembly for vehicles that require an in-tank fuel delivery module with integrated level sensing. The assembly uses a turbine pump design, external strainer, nitrile rubber seal, and a round connector layout to match the original service configuration on the listed Explorer and Mountaineer applications. For buyers searching for a Ford Explorer fuel pump hanger assembly or a Mercury Mountaineer fuel pump module replacement, PN4003 provides the core components in one service-ready unit.

This part cross-references Bosch 66085 and Carter P74879S for the same application. It is also referenced by part number PN4003 for catalog and service lookup.

Common Problems This Part Can Address

• Hard starting caused by weak or failing in-tank fuel delivery
• Fuel gauge inaccuracy from a worn sending unit
• Engine hesitation from inconsistent fuel pressure
• Fuel starvation from a clogged or damaged strainer
• Noise or intermittent operation from an aging electric pump

Installation Notes and Tips

Verify the vehicle’s year, model, and fuel system configuration before installation. This assembly is specific fit and uses a quick-connect outlet, so confirm connector style, terminal count, and tank access before removal of the original unit. Replace the tank seal during service and inspect the fuel lines and electrical connector for wear before reassembly. PN4003 is supplied without mounting hardware and without a lock ring.

Quality Assurance

Sparta is distributed by Delphi, an OE fuel system supplier, and is positioned for higher-mileage and earlier model vehicles. PN4003 is built as a standard replacement fuel pump hanger assembly for the listed Ford Explorer, Explorer Sport, Explorer Sport Trac, and Mercury Mountaineer applications.