Delphi MF0155 Mechanical Fuel Pump

Delphi MF0155 Mechanical Fuel Pump

The Delphi MF0155 is a standard replacement mechanical fuel pump for gasoline applications that require a 5 psi system pressure and an average flow rating of 38. Built with Delphi’s OE heritage and aftermarket engineering experience, it is a practical choice for classic Pontiac fuel system service.

Compatible with select 1969-1972 Pontiac LeMans and other late-1960s Pontiac models, this mechanical fuel pump includes gaskets and an instruction sheet for a straightforward service replacement. The MF0155 uses a hose bead inlet, threaded outlet design, and two outlet ports with a 5/8-18 UNF outlet fitting thread size.

Key Features

• Mechanical fuel pump for gasoline fuel systems
• Standard replacement grade for service repairs
• 5 psi system pressure and 38 average flow rating
• Hose bead inlet with 0.375 in. outside diameter
• Threaded outlet with two outlet ports
• Gasket or seal included
• Package contents: mechanical fuel pump, gaskets, instruction sheet

Detailed Description

Delphi MF0155 is engineered for classic Pontiac fuel delivery service where a mechanical pump is required. It is listed for 1969-1972 Pontiac LeMans, 1969-1970 Pontiac Bonneville, 1969-1970 Pontiac Catalina, 1969-1970 Pontiac Tempest, 1969 Pontiac Firebird, 1969 Pontiac Grand Prix, and 1969 Pontiac GTO. This part cross-references Airtex Fuel Pumps 40679 and Carter M4885 for the same application. The MF0155 is a direct-fit style replacement for vehicles using a 3-line pump configuration and is not suitable for high performance vehicles.

Common Repair Uses

• Restoring fuel delivery on a classic Pontiac that cranks but does not receive fuel
• Replacing a worn mechanical pump that causes hard starting
• Addressing low fuel pressure or inconsistent fuel supply at the carburetor
• Correcting fuel starvation during normal street driving in stock applications
• Servicing aging fuel system components on late-1960s Pontiac models

Installation Notes

Verify the vehicle uses a mechanical, gasoline fuel pump with a 3-line pump setup before ordering. Confirm inlet and outlet orientation, outlet thread size, and mounting style against the original part. Use the included gaskets during installation and follow the instruction sheet for proper sealing and fuel line connection. This part is listed for N/A position applications.

Quality Assurance

Delphi draws on more than a century of OE experience and a broad aftermarket portfolio built from original equipment knowledge. That background supports consistent fitment, materials selection, and service-focused replacement design for classic fuel system repairs.