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OE Quality
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DelphiPart #: FG0166
Delphi FG0166 Fuel Transfer Unit
32 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Chevrolet and GMC, Silverado 2500 HD, Silverado 3500, Sierra 2500 HD, and Sierra 3500
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Delphi FG0166 Fuel Transfer Unit Overview
The Delphi FG0166 fuel transfer unit is designed specifically for diesel fuel systems in Chevrolet and GMC heavy-duty trucks. Engineered as a standard replacement part, this in-tank fuel pump assembly ensures reliable fuel delivery and accurate fuel level readings for models like the Silverado 2500 HD and Sierra 3500.
- Compatible with Chevrolet Silverado 2500 HD, Silverado 3500, GMC Sierra 2500 HD, and Sierra 3500
- Designed for diesel fuel applications
- In-tank fuel transfer unit with internal strainer
- Includes fuel level sender assembly with float arm
- Outlet outside diameter: 0.500 inches with quick connect fittings
- Four male pin terminals for secure electrical connections
- Comes with gasket/seal and instruction sheet
- Standard replacement grade for reliable performance
Detailed Product Description
The Delphi FG0166 fuel transfer unit is engineered to meet the specific fuel delivery requirements of diesel-powered Chevrolet and GMC heavy-duty trucks. Featuring an internal strainer inlet and two quick connect outlets with a 0.500-inch outside diameter, this unit ensures clean fuel flow and easy installation. The assembly includes a fuel level sender with a float arm, providing accurate fuel level readings to the vehicle’s gauge. With four male pin terminals, the electrical connections are secure and compatible with factory wiring harnesses. The package includes a gasket seal to maintain a proper fit and prevent leaks, along with an instruction sheet to assist with installation.
Common Applications and Issues Addressed
- Replacement for faulty or failing in-tank fuel pumps in diesel Chevrolet Silverado 2500 HD and GMC Sierra 3500 trucks
- Resolves inconsistent fuel delivery or engine performance issues caused by clogged or damaged strainers
- Fixes inaccurate fuel level readings due to malfunctioning sender assemblies
- Addresses fuel leaks by providing a new gasket seal
- Improves electrical connectivity with reliable four-pin male terminals
Installation Notes and Tips
- Ensure compatibility with your specific Chevrolet or GMC heavy-duty truck model before installation
- Handle the float arm carefully to avoid damage during installation
- Verify all electrical connections are secure and terminals are properly seated
- Replace the gasket seal to prevent fuel leaks and ensure a tight fit
- Follow the included instruction sheet for step-by-step guidance
Quality Assurance and Warranty
The Delphi FG0166 fuel transfer unit is manufactured to meet OEM standards for durability and performance. As a standard replacement part, it undergoes rigorous quality control to ensure reliable operation in diesel fuel systems. While specific warranty terms may vary, Delphi products typically come with a limited warranty covering defects in materials and workmanship. Consult your supplier or product documentation for detailed warranty information.
| Brand | Delphi |
|---|---|
| Part Number | FG0166 |
| Fuel Level Sender Assembly Included | Yes |
| Fuel Type | Diesel |
| Gasket Or Seal Included | Yes |
| In Tank or External | In Tank |
| Inlet Type | Strainer |
| Internal Or External Strainer | Internal |
| Item Grade | Standard Replacement |
| Outlet Outside Diameter | 0.500 |
| Outlet Quantity | 2 |
| Outlet Type | Quick Connect |
| Package Contents | Fuel Transfer Unit w/Float Arm, Seal, Instruction Sheet |
| Regulator Included | No |
| Resistance Ohms Empty | 40.0 |
| Resistance Ohms Full | 250.0 |
| Strainer Included | Yes |
| Terminal Gender | Male |
| Terminal Quantity | 4 |
| Terminal Type | Pin |
| Vapor Pressure Sensor | No |
This part fits 32 vehicles. Search below:
| Year | Make | Model | Body Type | Position | Notes |
|---|---|---|---|---|---|
| 2004 | Chevrolet | Silverado 2500 HD | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. | |
| 2004 | Chevrolet | Silverado 3500 | Standard Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2004 | Chevrolet | Silverado 3500 | Extended Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2004 | Chevrolet | Silverado 3500 | Crew Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2004 | GMC | Sierra 2500 HD | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. | |
| 2004 | GMC | Sierra 3500 | Standard Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2004 | GMC | Sierra 3500 | Extended Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2004 | GMC | Sierra 3500 | Crew Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2003 | Chevrolet | Silverado 2500 HD | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. | |
| 2003 | Chevrolet | Silverado 3500 | Standard Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2003 | Chevrolet | Silverado 3500 | Extended Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2003 | Chevrolet | Silverado 3500 | Crew Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2003 | GMC | Sierra 2500 HD | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. | |
| 2003 | GMC | Sierra 3500 | Standard Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2003 | GMC | Sierra 3500 | Extended Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2003 | GMC | Sierra 3500 | Crew Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2002 | Chevrolet | Silverado 2500 HD | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. | |
| 2002 | Chevrolet | Silverado 3500 | Standard Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2002 | Chevrolet | Silverado 3500 | Extended Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2002 | Chevrolet | Silverado 3500 | Crew Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2002 | GMC | Sierra 2500 HD | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. | |
| 2002 | GMC | Sierra 3500 | Standard Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2002 | GMC | Sierra 3500 | Extended Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2002 | GMC | Sierra 3500 | Crew Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2001 | Chevrolet | Silverado 2500 HD | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. | |
| 2001 | Chevrolet | Silverado 3500 | Standard Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2001 | Chevrolet | Silverado 3500 | Extended Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2001 | Chevrolet | Silverado 3500 | Crew Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2001 | GMC | Sierra 2500 HD | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. | |
| 2001 | GMC | Sierra 3500 | Standard Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2001 | GMC | Sierra 3500 | Extended Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
| 2001 | GMC | Sierra 3500 | Crew Cab Pickup | N/A | Strainer is Inside the Module Assembly; Fuel tank contamination is the leading cause of premature fuel pump failure. To reduce risk of contaminating the replacement pump, it’s recommended to clean the fuel tank before installing a new pump.; Use of fuel tank cleaning kit FC01 is recommended. |
* 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:
1AMFP00155253268562537219789060639A30416E4061REFG0166MS547830MU242P76668RSP6242M
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.