Delphi MF0028 Mechanical Fuel Pump

Delphi MF0028 Mechanical Fuel Pump

The Delphi MF0028 is a standard replacement mechanical fuel pump for gasoline applications that require 6 psi system pressure and an average flow rating of 31. Built with Delphi’s OE heritage and application knowledge, it is a practical choice for restoring fuel delivery on select Chevrolet S10 and GMC S15 trucks and SUVs.

Compatible with 1984-1985 Chevrolet S10, 1984-1985 Chevrolet S10 Blazer, 1984-1985 GMC S15, and 1984-1985 GMC S15 Jimmy, this pump is built for direct-fit service on the listed applications. The MF0028 includes a gasket and uses a hose bead inlet with a threaded outlet connection.

Key Features

• Mechanical fuel pump for gasoline engines
• Standard replacement grade for service repairs
• 6 psi system pressure
• Average flow rating of 31
• 0.375 in. inlet outside diameter
• Hose bead inlet and threaded outlet design
• Outlet thread size: 1/2-20 UNF
• Gasket included for installation
• Package contents: mechanical fuel pump, gasket, instruction sheet

Application Details

Fits 1984-1985 Chevrolet S10, N/A. Fits 1984-1985 Chevrolet S10 Blazer, N/A. Fits 1984-1985 GMC S15, N/A. Fits 1984-1985 GMC S15 Jimmy, N/A. This part cross-references Airtex Fuel Pumps 42186 and Carter M60404 for the same application.

For buyers searching for a 1984-1985 Chevrolet S10 mechanical fuel pump, 1984-1985 GMC S15 fuel pump replacement, or Delphi MF0028 fuel pump for classic GM trucks, this part matches the listed fitment and connection style.

What It Helps Address

• Hard starting caused by weak fuel delivery
• Fuel starvation under normal engine operation
• Low fuel pressure at the carburetor
• Stalling related to inconsistent mechanical pumping
• Restoration of original-style fuel system function

Installation Notes

Verify inlet and outlet connection style, outlet thread size, and system pressure before installation. Replace the gasket during service and confirm fuel line routing matches the hose bead inlet and threaded outlet configuration. Follow the included instruction sheet and check for leaks after installation.

Quality Assurance

Delphi draws on more than a century of OE experience and a broad aftermarket portfolio built from original equipment knowledge. The MF0028 reflects that background with a standard replacement design for select Chevrolet S10 and GMC S15 applications.