Delphi MF0051 Mechanical Fuel Pump

Delphi MF0051 Mechanical Fuel Pump

The Delphi MF0051 is a standard replacement mechanical fuel pump for gasoline applications that require a 5 psi system pressure and an average flow rating of 25. Built with Delphi’s OE heritage and aftermarket engineering experience, it is a direct-fit style solution for classic Chevrolet, GMC, Pontiac, Buick, and Oldsmobile applications that use a 2-line stamped steel pump.

• Mechanical fuel pump for gas engines
• System pressure: 5 psi
• Average flow rating: 25
• Outlet type: threaded, 1/2-20 UNF outlet fitting thread size
• Inlet type: hose bead, 0.313 in. inlet outside diameter
• Gasket or seal included
• Package contents: mechanical fuel pump, gasket, instruction sheet
• Standard replacement grade for OE-style service

Fitment and application details

Fits 1975 Chevrolet C10, N/A; Fits 1967-1975 Chevrolet C10 Suburban, N/A; Fits 1975 Chevrolet C20, N/A; Fits 1967-1975 Chevrolet C20 Suburban, N/A; Fits 1975 Chevrolet C30, N/A; Fits 1967-1975 Chevrolet El Camino, N/A; Fits 1969-1975 Chevrolet Nova, N/A; Fits 1975 Chevrolet G10, N/A; Fits 1975 Chevrolet G20, N/A; Fits 1975 Chevrolet G30, N/A; Fits 1975 Chevrolet K10, N/A; Fits 1967-1975 Chevrolet K10 Suburban, N/A; Fits 1975 Chevrolet K20, N/A; Fits 1967-1975 Chevrolet K20 Suburban, N/A; Fits 1975 Chevrolet K5 Blazer, N/A; Fits 1971-1975 GMC Jimmy, N/A; Fits 1969-1974 Chevrolet Blazer, N/A; Fits 1967-1974 Chevrolet Camaro, N/A; Fits 1973-1974 Chevrolet Malibu, N/A; Fits 1966-1967 Chevrolet Malibu, N/A; Fits 1974 GMC G15/G1500 Van, N/A; Fits 1969 GMC G15/G1500 Van, N/A; Fits 1972-1974 GMC G25/G2500 Van, N/A; Fits 1967 GMC G25/G2500 Van, N/A; Fits 1974 GMC G25/G2500 Van, N/A; Fits 1967-1971 GMC G25/G2500 Van, N/A; Fits 1971-1974 GMC G35/G3500 Van, N/A; Fits 1973-1974 Oldsmobile Omega, N/A; Fits 1970-1974 Pontiac Firebird, N/A; Fits 1968-1974 Pontiac LeMans, N/A; Fits 1967-1973 Chevrolet Bel Air, N/A; Fits 1967-1973 Chevrolet Impala, N/A; Fits 1969-1973 GMC G15/G1500 Van, N/A; Fits 1968-1971 Buick Skylark, N/A; Fits 1967-1971 Oldsmobile Cutlass, N/A; Fits 1970 Pontiac Tempest, N/A; Fits 1967-1969 Chevrolet Caprice, N/A; Fits 1965-1966 Chevrolet Bel Air, N/A; Fits 1966 Chevrolet El Camino, N/A; Fits 1965-1966 Chevrolet Impala, N/A; Fits 1965-1966 GMC G1000 Series, N/A.

This part cross-references Carter (e.g., M4503) for the same application.

What this fuel pump helps address

• Hard starting caused by weak fuel delivery
• Fuel starvation under normal mechanical pump operation
• Low fuel pressure in carbureted gasoline systems
• Fuel supply issues on classic Chevrolet C10 and GMC van applications
• Replacement needs for worn stamped steel 2-line fuel pump setups

Installation notes and quality assurance

Verify the vehicle uses a 2-line pump and stamped steel pump configuration before ordering. Confirm inlet and outlet connection style, including the 1/2-20 UNF threaded outlet and hose bead inlet, against the original pump and fuel line setup. Use the included gasket during installation and follow the instruction sheet for proper mounting and connection checks.

Delphi builds this replacement pump using knowledge developed from long OE supply experience and a broad aftermarket portfolio. That OE background is reflected in the MF0051’s standard replacement design for older Chevrolet, GMC, Pontiac, Buick, and Oldsmobile fuel systems.

Compatible search terms: 1975 Chevrolet C10 fuel pump, 1967-1975 Chevrolet C10 Suburban mechanical fuel pump, 1970-1974 Pontiac Firebird fuel pump, Delphi MF0051 replacement.