Delphi MF0055 Mechanical Fuel Pump

Delphi MF0055 Mechanical Fuel Pump

Delphi MF0055 is a standard replacement mechanical fuel pump for gasoline applications that require an 8 psi system pressure and a 65 average flow rating. Built from Delphi’s OE heritage and aftermarket engineering experience, it is a practical choice for classic Chevrolet and GMC fuel systems that use a 3 line pump layout.

Fits 1968-1995 Chevrolet and GMC applications listed below, including Chevrolet G10, G20, G30, C10, K5 Blazer, El Camino, Bel Air, Caprice, Impala, Monte Carlo, and GMC G15/G25/G35 vans. This Delphi MF0055 fuel pump is also a direct reference point for restorations and maintenance on Chevrolet G20 and GMC G15/G1500 Van platforms with the correct 3 line pump configuration.

Key Features

• Mechanical fuel pump for gasoline engines
• Standard replacement grade for service and restoration work
• 8 psi system pressure specification
• 65 average flow rating
• Hose bead inlet with 0.375 in. inlet outside diameter
• Threaded outlet with 5/8-18 UNF outlet fitting thread size
• Two outlet ports
• Gasket or seal included
• Package contents: mechanical fuel pump, gaskets, instruction sheet

Detailed Description

Delphi MF0055 is engineered for vehicles that use a mechanical, engine-driven fuel delivery setup. The threaded outlet design, hose bead inlet, and dual outlet configuration support the fuel routing used in many classic Chevrolet and GMC trucks, vans, and passenger vehicles. For buyers searching for a mechanical fuel pump for Chevrolet G10, Chevrolet G20, or GMC G15/G25/G35 van applications, this part number provides a focused OE-style replacement option.

Delphi draws on more than a century of OE experience, and that background is reflected in the fit, form, and function approach used across its aftermarket line. Part number MF0055 is a useful match for gasoline systems where the original pump specification calls for 8 psi and a 3 line pump arrangement.

This part cross-references Airtex Fuel Pumps 41217 and Carter M6215 for the same application.

Common Problems This Pump Can Address

• Hard starting caused by weak fuel delivery
• Fuel starvation under normal driving conditions
• Loss of fuel pressure from a worn mechanical pump
• Erratic engine operation related to inconsistent fuel supply
• Restoration needs on original-style Chevrolet and GMC fuel systems

Installation Notes and Tips

• Verify that the vehicle uses a 3 line pump configuration before ordering.
• Confirm inlet and outlet thread sizes against the original pump.
• Use the included gaskets during installation.
• Check fuel line routing and condition before installing the new pump.
• Prime and inspect the system after installation to confirm proper fuel delivery and leak-free operation.

Quality Assurance

Delphi builds aftermarket parts using OE knowledge and application coverage developed through long-term supplier experience with major automakers. MF0055 is a standard replacement mechanical fuel pump intended to meet the needs of classic vehicle maintenance and restoration where the original fuel system specification is known.