Delphi MF0100 Mechanical Fuel Pump

Mechanical Fuel Pump for Classic GM Applications

The Delphi MF0100 is a standard replacement mechanical fuel pump for gasoline engines that use a threaded inlet and threaded outlet connection. Built with OE heritage and backed by Delphi’s long history supplying top automakers, it is a practical choice for restoring fuel delivery on select Chevrolet, Pontiac, Buick, and Oldsmobile vehicles.

With an average flow rating of 40 and a system pressure of 8 psi, this pump is suited for factory-style fuel systems that require consistent mechanical fuel delivery. The included gaskets and instruction sheet help support a straightforward replacement process.

Key Features

• Mechanical fuel pump for gas applications
• Standard replacement grade for OE-style service
• Threaded inlet and threaded outlet design
• Outlet fitting thread size: 5/8-18 UNF
• Average flow rating: 40
• System pressure: 8 psi
• Gasket or seal included
• Package contents include the pump, gaskets, and instruction sheet

Product Details

Delphi MF0100 is built for vehicles that use a long pump housing and a 3-line fuel pump configuration, with select fitments also listed for 4-line pump applications. It is a direct mechanical fuel pump solution for classic GM platforms, including Chevrolet Impala, Pontiac Firebird, Pontiac Bonneville, Pontiac Catalina, Pontiac Grand Prix, Pontiac LeMans, Pontiac Grand Am, Pontiac GTO, Buick LeSabre, and Oldsmobile 98, Custom Cruiser, and Delta 88 applications. This part cross-references Airtex Fuel Pumps 41382 for the same application.

Common Uses

• Restoring fuel pressure on a worn mechanical fuel pump
• Correcting hard-start or fuel starvation conditions
• Replacing a leaking pump body or failed diaphragm
• Addressing inconsistent fuel delivery at the carburetor
• Returning factory-style operation to classic GM fuel systems

Installation Notes

Verify inlet and outlet thread sizes before installation, and confirm the vehicle uses the listed long pump housing and line configuration. Clean the mounting surface, replace the gasket during service, and follow the included instruction sheet for proper installation and priming procedures. Confirm fuel line routing and pressure requirements match the vehicle’s original setup before returning the engine to service.

Quality Assurance

Delphi draws on more than 100 years of OE experience and a broad aftermarket portfolio built from original equipment knowledge. The MF0100 is a standard replacement part intended to meet the needs of select classic vehicle fuel systems with OE-style fit and function.