Delphi MF0103 Mechanical Fuel Pump

Delphi MF0103 Mechanical Fuel Pump

The Delphi MF0103 is a standard replacement mechanical fuel pump for gasoline applications that require threaded inlet and outlet connections. Built from Delphi’s OE-focused engineering background, it is specified for 7 psi system pressure and an average flow rating of 30, making it a practical choice for restoring fuel delivery on select classic and carbureted vehicles.

Key Features

• Mechanical fuel pump for gas applications
• Threaded inlet and threaded outlet for secure connection
• 5/8-18 UNF outlet fitting thread size
• 7 psi system pressure specification
• Average flow rating of 30
• Gasket or seal included
• Standard replacement grade
• Package contents include the mechanical fuel pump, gaskets, and instruction sheet

Detailed Description

Delphi MF0103 is engineered as a direct-style mechanical fuel pump for vehicles that rely on engine-driven fuel delivery rather than an electric pump. Delphi draws on more than a century of OE experience and supplier knowledge used by major automakers, and that background is reflected in the fit, function, and material selection of its aftermarket components. This part cross-references Carter M4704 for the same application. For buyers searching for a Delphi fuel pump for classic car fuel system repair, MF0103 offers a threaded-connection design with a 0.375-inch inlet outside diameter and a 5/8-18 UNF outlet fitting thread size. It is a strong match for restoration work and fuel system service on gasoline-powered applications where stable mechanical fuel delivery is required. If you are sourcing a replacement fuel pump for a Ford Mustang, Chevrolet Camaro, or similar carbureted vehicle, Delphi MF0103 is built for that type of service environment.

Common Problems It Can Help Solve

• Hard starting caused by weak fuel delivery
• Engine stalling from insufficient fuel pressure
• Fuel starvation under normal driving conditions
• Loss of prime in a worn mechanical pump
• Fuel system service needs on carbureted vehicles

Installation Notes and Tips

Confirm inlet and outlet thread sizes before installation, and verify that the fuel system is designed for a mechanical pump with 7 psi pressure. Use the included gaskets during installation and follow the instruction sheet for proper mounting and line routing. For vehicle-specific service, match the pump to the original application and check fuel line condition before final assembly. Fits 1965-1973 Ford Mustang, engine-driven fuel system applications. Fits 1967-1969 Chevrolet Camaro, engine-driven fuel system applications.

Quality Assurance

Delphi builds aftermarket parts using OE heritage and application knowledge developed through long-term supplier experience with major automakers. MF0103 is a standard replacement mechanical fuel pump intended to meet the needs of service and restoration work on gasoline vehicles.