Delphi MF0157 Mechanical Fuel Pump

Delphi MF0157 Mechanical Fuel Pump

The Delphi MF0157 is a standard replacement mechanical fuel pump for gasoline applications that require a 6 psi system pressure and a 38 average flow rating. Built from Delphi’s OE-focused engineering background, it is a direct service option for classic Oldsmobile fuel delivery repairs, including 1967-1969 Oldsmobile 98, Cutlass, Cutlass Supreme, Delta 88, and Toronado applications with a 2 line pump and without air conditioning.

Key Features

• Mechanical fuel pump for gas engines
• System pressure: 6 psi
• Average flow rating: 38
• Inlet outside diameter: 0.375 in.
• Hose bead inlet with threaded outlet
• Outlet thread size: 1/4-18 NPSF
• Gasket or seal included
• Package contents: mechanical fuel pump, gaskets, instruction sheet

Detailed Description

Delphi MF0157 is engineered as a standard replacement mechanical fuel pump for classic carbureted fuel systems. It uses a hose bead inlet, a threaded outlet, and a 1/4-18 NPSF outlet fitting thread size to support proper fuel delivery on the listed Oldsmobile applications. Delphi draws on OE heritage and decades of supplier experience to build aftermarket parts with the fit and function expected for service replacement work. This part cross-references Airtex Fuel Pumps 40704 and Carter M4871 for the same application. Delphi MF0157 is a direct match for 1967-1969 Oldsmobile 98, Cutlass, Cutlass Supreme, Delta 88, and Toronado models with the specified configuration.

What This Fuel Pump Helps Address

• Hard starting caused by weak fuel delivery
• Fuel starvation under normal driving conditions
• Low fuel pressure at the carburetor
• Engine hesitation from inconsistent pump output
• Fuel system service on original mechanical pump setups

Installation Notes and Tips

Confirm the vehicle uses a mechanical fuel pump setup with gas fuel, a 2 line pump configuration, and no air conditioning before ordering. Verify inlet and outlet style, outlet thread size, and mounting alignment against the original pump. Replace the gasket during installation and follow the included instruction sheet for proper setup. For best results, inspect fuel lines, clamps, and the fuel filter before returning the vehicle to service.

Quality Assurance

Delphi builds this replacement pump using OE experience and application knowledge developed through long-term supplier relationships with major automakers. The MF0157 is intended to provide dependable service for the listed Oldsmobile fitments while maintaining the specifications required for classic fuel system repair.