Delphi MF0078 Mechanical Fuel Pump
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Delphi

Delphi MF0078 Mechanical Fuel Pump

Brand Delphi MF0078
Average Flow Rating 30
Fuel Type Gas
Gasket Or Seal Included Yes
Inlet Outside Diameter 0.313
Inlet Type Threaded
Item Grade Standard Replacement
Outlet Fitting Thread Size 1/2-20 UNF
Outlet Quantity 1
Outlet Type Threaded
Package Contents Mechanical Fuel Pump, Gasket, Instruction Sheet
System Pressure 7 psi
Fits Ford, Mercury, and Lincoln · 34 vehicles

Standard replacement. Built as a mechanical fuel pump for straightforward service replacement.

Threaded connections. Threaded inlet and outlet fittings simplify installation and secure attachment.

Gasket included. Comes with a gasket and instruction sheet for a complete service job.

Cross-references Airtex Fuel Pumps 6750, Carter M6750 and Spectra Premium SP1050MP for the same application. See all 18.

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Mechanical Fuel Pump for Classic Ford and Mercury

Delphi MF0078 is a standard replacement mechanical fuel pump for gasoline applications that use a threaded inlet and threaded outlet connection. It is built for 7 psi system pressure and an average flow rating of 30, with a gasket and instruction sheet included for service work on select Ford, Lincoln, and Mercury vehicles.

Key Features

  • Mechanical fuel pump for gas applications
  • Threaded inlet and threaded outlet design
  • 1/2-20 UNF outlet fitting thread size
  • 7 psi system pressure
  • Average flow rating of 30
  • Gasket or seal included
  • Standard replacement grade
  • Package contents: mechanical fuel pump, gasket, instruction sheet

Detailed Description

Delphi MF0078 is an OE-style mechanical fuel pump developed from the brand’s long history of supplying original equipment to major automakers. It is intended for gasoline fuel systems that require a threaded mechanical pump with a 0.313 inlet outside diameter and a single threaded outlet. This part cross-references Airtex Fuel Pumps 6750 and Carter M6750 for the same application. It also aligns with classic Ford LTD, Mercury Grand Marquis, and Mercury Marquis service needs where the original fuel delivery setup uses a 2-line pump and no return line.

Fits 1984-1985 Ford LTD, N/A. Fits 1979-1982 Ford LTD, N/A. Fits 1980-1981 Ford LTD, N/A, with California Emission System; with 2 Line Pump; without Return Line. Fits 1981 Ford Thunderbird, N/A. Fits 1980 Ford F-350, N/A. Fits 1978 Ford Fairmont, N/A. Fits 1978-1982 Mercury Grand Marquis, N/A. Fits 1981 Mercury Grand Marquis, N/A, with California Emission System; with 2 Line Pump; without Return Line. Fits 1979-1982 Mercury Marquis, N/A. Fits 1981 Mercury Cougar, N/A. Fits 1977-1980 Lincoln Versailles, N/A. Fits 1980 Lincoln Continental, N/A. Fits 1980 Lincoln Mark VI, N/A. Fits 1976-1980 Mercury Monarch, N/A. Fits 1978 Mercury Zephyr, N/A.

Common Uses

  • Restoring fuel delivery on carbureted classic Ford and Mercury vehicles
  • Replacing a worn mechanical pump that causes hard starting
  • Addressing fuel starvation under load or at cruising speed
  • Correcting low fuel pressure in a 2-line pump setup
  • Servicing vehicles that do not use a return line

Installation Notes and Tips

Verify inlet and outlet thread sizes before installation, and confirm the vehicle uses a mechanical pump with a 2-line configuration where noted. Clean the mounting surface thoroughly and install the included gasket to help maintain a proper seal. Check fuel line routing, priming, and pressure after installation to confirm the system is delivering the expected 7 psi.

Quality Assurance

Delphi builds aftermarket parts using OE heritage and application knowledge developed through decades of original equipment supply. MF0078 is a standard replacement fuel pump designed to meet the needs of the listed vehicles and fuel system configurations.

Related reading

This part fits 34 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
1985FordLTDN/ACompatible with 2 Line Pump and no need for a Return Line.
1984FordLTDN/ACompatible with 2 Line Pump and no need for a Return Line.
1982FordLTDN/ACompatible with 2 Line Pump and no need for a Return Line.
1982MercuryGrand MarquisN/ACompatible with 2 Line Pump and no need for a Return Line.
1982MercuryMarquisN/ACompatible with 2 Line Pump and no need for a Return Line.
1981FordLTDN/Awith California Emission System; with 2 Line Pump; without Return Line
1981FordLTDN/ACompatible with 2 Line Pump and no need for a Return Line.
1981FordThunderbirdN/ACompatible with 2 Line Pump and no need for a Return Line.
1981MercuryCougarN/ACompatible with 2 Line Pump and no need for a Return Line.
1981MercuryGrand MarquisN/Awith California Emission System; with 2 Line Pump; without Return Line
1981MercuryGrand MarquisN/ACompatible with 2 Line Pump and no need for a Return Line.
1981MercuryMarquisN/ACompatible with 2 Line Pump and no need for a Return Line.
1980FordF-350N/ACompatible with 2 Line Pump and no need for a Return Line.
1980FordLTDN/Awith California Emission System; with 2 Line Pump; without Return Line
1980FordLTDN/ACompatible with 2 Line Pump and no need for a Return Line.
1980LincolnContinentalN/ACompatible with 2 Line Pump and no need for a Return Line.
1980LincolnMark VIN/ACompatible with 2 Line Pump and no need for a Return Line.
1980LincolnVersaillesN/ACompatible with 2 Line Pump and no need for a Return Line.
1980MercuryGrand MarquisN/ACompatible with 2 Line Pump and no need for a Return Line.
1980MercuryMarquisN/ACompatible with 2 Line Pump and no need for a Return Line.
1980MercuryMonarchN/ACompatible with 2 Line Pump and no need for a Return Line.
1979FordLTDN/ACompatible with 2 Line Pump and no need for a Return Line.
1979LincolnVersaillesN/ACompatible with 2 Line Pump and no need for a Return Line.
1979MercuryGrand MarquisN/ACompatible with 2 Line Pump and no need for a Return Line.
1979MercuryMarquisN/ACompatible with 2 Line Pump and no need for a Return Line.
1979MercuryMonarchN/ACompatible with 2 Line Pump and no need for a Return Line.
1978FordFairmontN/ACompatible with 2 Line Pump and no need for a Return Line.
1978LincolnVersaillesN/ACompatible with 2 Line Pump and no need for a Return Line.
1978MercuryGrand MarquisN/ACompatible with 2 Line Pump and no need for a Return Line.
1978MercuryMonarchN/ACompatible with 2 Line Pump and no need for a Return Line.
1978MercuryZephyrN/ACompatible with 2 Line Pump and no need for a Return Line.
1977LincolnVersaillesN/ACompatible with 2 Line Pump and no need for a Return Line.
1977MercuryMonarchN/ACompatible with 2 Line Pump and no need for a Return Line.
1976MercuryMonarchN/ACompatible with 2 Line Pump and no need for a Return Line.
Directly replaces or cross-references 18 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Airtex Fuel Pumps — 6750Carter — M6750Spectra Premium — SP1050MP68423644125364712016472099AMF0078D6OE9350ABD6OE9350BAD6OZ9350AD8BE 9350-AAD60E 9350-ABD60E 9350-BAD60Z 9350-AE2AE 9350-CAE2AZ 9350-CE7AZ 9350-A