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Delphi MF0033 Mechanical Fuel Pump
Reliable Mechanical Fuel Pump for Chevrolet and GMC Trucks
The Delphi MF0033 mechanical fuel pump is designed to provide consistent fuel delivery for select Chevrolet and GMC truck models. Engineered for gas fuel systems, this pump ensures steady flow and pressure to support your vehicle's performance needs.
- Compatible with Chevrolet and GMC C20, C20 Suburban, C30, C2500, C2500 Suburban, C3500, P30, P3500, R30, and R3500 models
- Standard replacement mechanical fuel pump with a 0.500 inch inlet outside diameter
- Includes gasket and instruction sheet for straightforward installation
- Features hose bead inlet and threaded outlet with two outlets sized 5/8-18 UNF
- Average flow rating of 25 gallons per hour at 7 psi system pressure
Technical Specifications and Features
The Delphi MF0033 mechanical fuel pump is designed for gasoline fuel systems, featuring a hose bead inlet with a 0.500 inch outside diameter to ensure secure hose connections. The pump includes two threaded outlets with 5/8-18 UNF fitting thread size, allowing for reliable fuel delivery. With an average flow rating of 25 gallons per hour and a system pressure of 7 psi, this pump meets the standard requirements for fuel delivery in medium-duty Chevrolet and GMC trucks. The package includes a gasket and an instruction sheet to assist with proper installation and sealing.
Applications and Common Issues Addressed
- Replacement for worn or leaking mechanical fuel pumps in Chevrolet and GMC trucks
- Resolves inconsistent fuel flow or pressure problems affecting engine performance
- Addresses fuel delivery interruptions caused by damaged inlet or outlet fittings
- Prevents fuel leaks with included gasket for a secure seal
- Suitable for restoring fuel system reliability in C20, C2500, and P3500 series trucks
Installation Notes and Tips
When installing the Delphi MF0033 mechanical fuel pump, ensure the gasket is properly seated to prevent fuel leaks. Verify that the hose bead inlet and threaded outlets are securely connected to the fuel lines. Follow the included instruction sheet carefully to maintain correct system pressure and flow. It is recommended to inspect related fuel system components during installation to ensure overall system integrity.
Quality Assurance and Warranty
Delphi mechanical fuel pumps are manufactured to meet OEM standards for fit and function. The MF0033 part number undergoes rigorous quality control to ensure durability and reliable performance in Chevrolet and GMC trucks. This standard replacement part includes a gasket and installation instructions to support proper setup. Warranty coverage details should be confirmed with the point of purchase or Delphi directly.
| Brand | Delphi |
| Part Number | MF0033 |
| Average Flow Rating | 25 |
| Fuel Type | Gas |
| Gasket Or Seal Included | Yes |
| Inlet Outside Diameter | 0.500 |
| Inlet Type | Hose Bead |
| Item Grade | Standard Replacement |
| Outlet Fitting Thread Size | 5/8-18 UNF |
| Outlet Quantity | 2 |
| Outlet Type | Threaded |
| Package Contents | Mechanical Fuel Pump, Gasket, Instruction Sheet |
| System Pressure | 7 psi |
This part fits 28 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1989 | Chevrolet | P30 | N/A | Fits vehicles with a 3 Line Pump. |
| 1989 | Chevrolet | R3500 | N/A | Fits vehicles with a 3 Line Pump. |
| 1989 | GMC | P3500 | N/A | Fits vehicles with a 3 Line Pump. |
| 1989 | GMC | R3500 | N/A | Fits vehicles with a 3 Line Pump. |
| 1988 | Chevrolet | P30 | N/A | Fits vehicles with a 3 Line Pump. |
| 1988 | Chevrolet | R30 | N/A | Fits vehicles with a 3 Line Pump. |
| 1988 | GMC | P3500 | N/A | Fits vehicles with a 3 Line Pump. |
| 1988 | GMC | R3500 | N/A | Fits vehicles with a 3 Line Pump. |
| 1987 | Chevrolet | P30 | N/A | Fits vehicles with a 3 Line Pump. |
| 1987 | Chevrolet | R30 | N/A | Fits vehicles with a 3 Line Pump. |
| 1987 | GMC | P3500 | N/A | Fits vehicles with a 3 Line Pump. |
| 1987 | GMC | R3500 | N/A | Fits vehicles with a 3 Line Pump. |
| 1986 | Chevrolet | C20 | N/A | with 3 Line Pump; with Federal Emission System |
| 1986 | Chevrolet | C20 Suburban | N/A | Fits vehicles with a 3 Line Pump. |
| 1986 | Chevrolet | C30 | N/A | Fits vehicles with a 3 Line Pump. |
| 1986 | Chevrolet | P30 | N/A | Fits vehicles with a 3 Line Pump. |
| 1986 | GMC | C2500 | N/A | Fits vehicles with a 3 Line Pump. |
| 1986 | GMC | C2500 Suburban | N/A | Fits vehicles with a 3 Line Pump. |
| 1986 | GMC | C3500 | N/A | Fits vehicles with a 3 Line Pump. |
| 1986 | GMC | P3500 | N/A | Fits vehicles with a 3 Line Pump. |
| 1985 | Chevrolet | C20 | N/A | with 3 Line Pump; From 01/1985 |
| 1985 | Chevrolet | C20 Suburban | N/A | with 3 Line Pump; From 01/1985 |
| 1985 | Chevrolet | C30 | N/A | with 3 Line Pump; From 01/1985 |
| 1985 | Chevrolet | P30 | N/A | with 3 Line Pump; From 01/1985 |
| 1985 | GMC | C2500 | N/A | with 3 Line Pump; From 01/1985 |
| 1985 | GMC | C2500 Suburban | N/A | with 3 Line Pump; From 01/1985 |
| 1985 | GMC | C3500 | N/A | with 3 Line Pump; From 01/1985 |
| 1985 | GMC | P3500 | N/A | with 3 Line Pump; From 01/1985 |
* 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.