OE Quality
60-Day Returns

Delphi MF0103 Mechanical Fuel Pump
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.
| Brand | Delphi |
|---|---|
| Part Number | MF0103 |
| Inlet Outside Diameter | 0.375 |
| Fuel Type | Gas |
| Gasket Or Seal Included | Yes |
| Inlet Type | Threaded |
| Outlet Type | Threaded |
| Outlet Quantity | 1 |
| Outlet Fitting Thread Size | 5/8-18 unf |
| Average Flow Rating | 30 |
| Item Grade | Standard replacement |
| Package Contents | Mechanical fuel pump, gaskets, instruction sheet |
| System Pressure | 7 psi |
This part fits 0 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|
* 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.