Delphi MF0041 Mechanical Fuel Pump

Delphi MF0041 Mechanical Fuel Pump

The Delphi MF0041 is a standard replacement mechanical fuel pump for gasoline applications that require a 5 psi system pressure and threaded inlet and outlet connections. Built from Delphi’s OE-focused engineering background, it is a direct-fit fuel delivery solution for select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles with a 3-line pump setup.

Key Features

• Mechanical fuel pump for gas applications
• Standard replacement grade for service repairs
• Threaded inlet and outlet fittings for secure connection
• 5/8-18 UNF inlet fitting thread size
• 1/2-20 UNF outlet fitting thread size
• Average flow rating of 12
• System pressure rated at 5 psi
• Gasket included for installation
• Package contents include the pump, gasket, and instruction sheet

Detailed Description

Delphi MF0041 is engineered for gasoline fuel systems and built as a standard replacement mechanical fuel pump for older carbureted applications. It uses threaded inlet and outlet ports, with two outlet connections and a threaded inlet design, making it suitable for vehicles that specify this style of fuel delivery hardware. Delphi draws on more than a century of OE experience, and that heritage is reflected in the fit, function, and application coverage of this replacement pump.

This part cross-references Airtex Fuel Pumps 42138 for the same application. It is also used in select Buick Century, Chevrolet Celebrity, Oldsmobile Cutlass Ciera, Pontiac 6000, Buick Skylark, Chevrolet Citation II, Oldsmobile Omega, Pontiac Phoenix, and Chevrolet Citation applications with a 3 Line Pump configuration. The Delphi MF0041 part number is commonly searched by buyers looking for a mechanical fuel pump for 1982-1986 Buick Century or 1983-1986 Chevrolet Celebrity fuel system service.

What It Helps Fix

• Hard starting caused by weak fuel delivery
• Fuel starvation under normal engine operation
• Low fuel pressure in carbureted systems
• Fuel pump leakage at worn mechanical pump housings
• Driveability issues tied to inconsistent fuel supply

Installation Notes and Tips

Verify the vehicle uses a 3-line pump configuration before ordering. Confirm inlet and outlet thread sizes match the existing fuel lines: 5/8-18 UNF inlet and 1/2-20 UNF outlet. Review the instruction sheet before installation, replace the gasket supplied with the pump, and inspect fuel lines and mounting surfaces for wear or contamination before reassembly.

Quality Assurance

Delphi builds aftermarket parts using OE heritage and application knowledge developed through long-term supplier experience with major automakers. The MF0041 is a standard replacement fuel pump designed to meet the needs of select classic GM vehicles while maintaining the expected fuel system specifications for the application.

Compatible With 1982-1986 Buick Century, 1983-1986 Chevrolet Celebrity, 1982-1986 Oldsmobile Cutlass Ciera, 1983-1986 Pontiac 6000, 1983-1985 Buick Skylark, 1984-1985 Chevrolet Citation II, 1983-1984 Oldsmobile Omega, 1983-1984 Pontiac Phoenix, 1980 Pontiac Phoenix, and 1983 Chevrolet Citation.