Delphi MF0009 Mechanical Fuel Pump

Delphi MF0009 Mechanical Fuel Pump

The Delphi MF0009 is a standard replacement mechanical fuel pump for gasoline applications that require a 5 psi system pressure and an average flow rating of 20. Built with Delphi’s OE heritage and aftermarket engineering knowledge, it is a direct service option for select Jeep fuel systems, including Wrangler, CJ5, CJ7, Cherokee, Scrambler, Wagoneer, J10, and J20 applications.

This Delphi MF0009 fuel pump includes the gasket and instruction sheet, and it uses a hose bead inlet with a threaded outlet for a secure fuel connection. The outlet thread size is 1/2-20 UNF, and the inlet outside diameter measures 0.313.

Key Features

• Mechanical fuel pump for gasoline engines
• Standard replacement grade for service repairs
• 5 psi system pressure
• Average flow rating of 20
• Hose bead inlet and threaded outlet design
• Outlet fitting thread size: 1/2-20 UNF
• Gasket included for installation
• Delphi OE-based aftermarket engineering

Detailed Description

Delphi MF0009 is built for Jeep fuel delivery service where a mechanical pump is required. It is a practical replacement for vehicles such as the 1972-1983 Jeep CJ5, 1976-1986 Jeep CJ7, 1974-1985 Jeep Cherokee, and 1987-1990 Jeep Wrangler with inlet fitting facing rear. It also applies to select Jeep Scrambler, Wagoneer, J10, and J20 models. This part cross-references Airtex Fuel Pumps 6737 and Carter M6737 for the same application.

Delphi draws on more than a century of OE experience and supplier knowledge from original equipment programs, which is reflected in the fit, form, and service-focused design of this replacement pump. For shoppers searching for a Jeep CJ5 fuel pump, Jeep CJ7 mechanical fuel pump, or Jeep Wrangler fuel pump replacement, MF0009 provides a direct-match service solution for the listed applications.

What It Helps Address

• Hard starting caused by weak fuel delivery
• Fuel starvation under normal engine operation
• Low fuel pressure in mechanical pump systems
• Stalling related to inconsistent pump output
• Service replacement for worn Jeep fuel pumps

Installation Notes and Tips

Verify the vehicle’s fuel system uses a mechanical pump and confirm inlet and outlet orientation before installation. The 1987-1990 Jeep Wrangler application is listed with inlet fitting facing rear, so matching pump orientation matters for proper routing. Use the included gasket during installation and confirm the 1/2-20 UNF outlet connection and 0.313 inlet outside diameter match the existing fuel lines.

Quality Assurance

Delphi builds this replacement pump using OE-based engineering knowledge developed through long-term supplier experience with major automakers. The MF0009 is positioned as a standard replacement part for the listed Jeep applications and is supported by Delphi’s aftermarket portfolio for a wide range of vehicles and model years.