HomeAir and Fuel Delivery > Fuel Pumps and Related ComponentsDelphi MF0103 Mechanical Fuel Pump
Part #: MF0103

Delphi MF0103 Mechanical Fuel Pump

Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$39.99Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Mechanical Fuel Pump for Gas Engines

The Delphi MF0103 mechanical fuel pump is designed to provide consistent fuel delivery for gas-powered vehicles. Engineered with a threaded inlet and outlet, this pump ensures secure connections and steady fuel flow at a system pressure of 7 psi.

  • Inlet outside diameter: 0.375 inches
  • Fuel type: Gas
  • Threaded inlet and outlet fittings for secure installation
  • Single outlet with 5/8-18 UNF thread size
  • Average flow rating of 30 gallons per hour
  • Includes gasket or seal for proper sealing
  • Standard replacement grade for reliable performance
  • Package includes mechanical fuel pump, gaskets, and instruction sheet

Durable Design and Precise Fuel Delivery

The Delphi MF0103 mechanical fuel pump is built to meet the demands of gas engine fuel systems requiring a steady flow rate and consistent pressure. Its 0.375-inch inlet diameter and threaded fittings provide a secure and leak-resistant connection, minimizing fuel delivery interruptions. With an average flow rating of 30 gallons per hour and a system pressure of 7 psi, this pump supports efficient engine operation. The included gasket ensures a proper seal during installation, reducing the risk of leaks. This standard replacement grade pump is suitable for various automotive applications where mechanical fuel pumps are specified.

Common Applications and Problem Resolution

  • Replaces worn or failing mechanical fuel pumps in gas-powered vehicles
  • Addresses fuel delivery issues such as inconsistent fuel flow or pressure drops
  • Helps resolve engine stalling or hesitation caused by fuel starvation
  • Prevents fuel leaks with included gasket and threaded fittings
  • Supports restoration of proper fuel system function in classic or older model vehicles

Installation Notes and Tips

Ensure compatibility with your vehicle’s fuel system by verifying inlet and outlet thread sizes and fuel type. The threaded inlet and outlet fittings require proper torque to avoid leaks but prevent overtightening to protect threads. Use the included gasket to achieve a secure seal between the pump and mounting surface. Follow the instruction sheet carefully for correct installation procedures and system pressure settings. This pump is designed for gas fuel systems operating at approximately 7 psi.

Quality Assurance and Warranty

Delphi mechanical fuel pumps are manufactured to meet industry standards for durability and performance. The MF0103 part number represents a standard replacement grade component designed for reliable operation. While specific warranty details are not provided, Delphi products typically undergo rigorous quality control to ensure consistent fuel delivery and long service life.

BrandDelphi
Part NumberMF0103
Inlet Outside Diameter0.375
Fuel TypeGas
Gasket Or Seal IncludedYes
Inlet TypeThreaded
Outlet TypeThreaded
Outlet Quantity1
Outlet Fitting Thread Size5/8-18 unf
Average Flow Rating30
Item GradeStandard replacement
Package ContentsMechanical fuel pump, gaskets, instruction sheet
System Pressure7 psi

This part fits 0 vehicles. Search below:

YearMakeModelPositionNotes

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

408776470571AMF0103M4704

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.