Delphi MF0020 Mechanical Fuel Pump

Mechanical Fuel Pump for Classic GM Applications

The Delphi MF0020 is a standard replacement mechanical fuel pump for gasoline applications that require a 7 psi system pressure and a 30 average flow rating. Built from Delphi’s OE heritage and aftermarket experience, it is a direct-fit option for select classic Chevrolet and GMC vehicles with a 2-line fuel pump setup.

Key Features

• Mechanical fuel pump for gas engines
• 7 psi system pressure
• 30 average flow rating
• Threaded outlet with 1/2-20 UNF fitting
• Hose bead inlet with 0.375 in. outside diameter
• Gasket and instruction sheet included
• Standard replacement grade

Detailed Description

Delphi MF0020 is engineered as a mechanical fuel pump replacement for select Chevrolet and GMC trucks, vans, and passenger cars from the late 1960s and early 1970s. It is listed for vehicles such as the Chevrolet C10 Suburban, El Camino, Camaro, Corvette, Impala, Nova, and GMC Jimmy and G-series vans when equipped with a 2-line fuel pump. The threaded outlet, hose bead inlet, and included gasket support a straightforward service replacement on the correct application. Delphi’s OE background is reflected in the part’s design approach, with coverage aimed at a broad range of classic vehicle model years. If you are sourcing a Delphi MF0020 fuel pump for a Chevrolet C10 Suburban or GMC Jimmy, verify the fuel line configuration before installation.

This part cross-references Airtex Fuel Pumps (e.g., 40443, 40503) for the same application.

What It Is Used For

• Restoring fuel delivery on a classic Chevrolet or GMC engine
• Replacing a worn mechanical pump that causes hard starting
• Addressing low fuel pressure at the carburetor
• Correcting fuel starvation under load or at higher RPM
• Replacing a leaking pump body or outlet connection

Installation Notes and Tips

Confirm that the vehicle uses a 2-line fuel pump before ordering or installing. Match the inlet and outlet style to the existing fuel lines, and verify the 1/2-20 UNF outlet thread size against the original hardware. Use the included gasket during installation and inspect the fuel lines, mounting surface, and pump drive condition before returning the vehicle to service. For classic Chevrolet and GMC applications, proper line routing and sealing are important to maintain consistent fuel delivery.

Quality Assurance

Delphi builds on more than a century of OE experience and supplier knowledge developed with major automakers. That background informs the MF0020’s standard replacement design for classic fuel system service.