Delphi MF0148 Mechanical Fuel Pump

Delphi MF0148 Mechanical Fuel Pump

The Delphi MF0148 is a standard replacement mechanical fuel pump for gasoline applications that require a 5 psi system pressure and a 38 average flow rating. Built from Delphi’s OE heritage and decades of supplier experience, it is a practical choice for classic Buick fuel system service.

Compatible With 1957-1965 Buick Riviera, Skylark, LeSabre, Century, and Roadmaster applications equipped with a 2-line fuel pump, this part number is a direct-fit option for select vintage Buick models. The Delphi MF0148 also includes gaskets and an instruction sheet for service work.

Key Features

• Mechanical fuel pump for gasoline fuel systems
• Standard replacement grade for select classic Buick applications
• 5 psi system pressure specification
• 38 average flow rating
• Hose bead inlet with threaded outlet design
• 1/8-27 NPSF outlet fitting thread size
• Gasket or seal included
• Package contents include the pump, gaskets, and instruction sheet

Application Details

Delphi MF0148 is built for select Buick vehicles from 1957 through 1965, including Buick Century, Roadmaster, LeSabre, Riviera, and Skylark models with a 2-line fuel pump setup. This part cross-references Airtex Fuel Pumps 40371 and Carter M4553 for the same application.

Use this mechanical fuel pump when servicing a classic Buick fuel delivery system that needs the correct inlet and outlet configuration, threaded outlet connection, and OE-style replacement fitment. The Delphi MF0148 supports gasoline fuel delivery in vintage carbureted applications where mechanical pump operation is required.

Common Reasons for Replacement

• Hard starting caused by weak fuel delivery
• Fuel starvation under normal driving conditions
• Low fuel pressure at the carburetor
• Fuel leakage at the pump body or connections
• Restoration or maintenance of a 2-line Buick fuel system

Installation Notes and Tips

Confirm that the vehicle uses a 2-line fuel pump before ordering. Verify inlet and outlet orientation, outlet thread size, and gasket sealing surfaces during installation. Clean the mounting surface, inspect fuel lines for wear, and follow the included instruction sheet for proper setup on the vehicle.

Quality Assurance

Delphi builds this replacement fuel pump using OE-focused engineering informed by long-term supplier experience with major automakers. The MF0148 is part of a broad aftermarket portfolio intended to support a wide range of vehicle applications, including classic Buick service needs.