HomeAir and Fuel Delivery > Fuel Pumps and Related ComponentsDelphi FG0125 Fuel Transfer Unit
Part #: FG0125

Delphi FG0125 Fuel Transfer Unit

⚙️ 8 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet and GMC, Silverado 3500 and Sierra 3500
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Reliable Fuel Transfer Unit for Chevrolet and GMC Trucks

The Delphi FG0125 fuel transfer unit is designed specifically for diesel-powered Chevrolet Silverado 3500 and GMC Sierra 3500 trucks. This in-tank fuel pump assembly ensures consistent fuel delivery and accurate fuel level readings for your heavy-duty vehicle.

  • Compatible with Chevrolet Silverado 3500 and GMC Sierra 3500 diesel models
  • In-tank fuel transfer unit with internal strainer and fuel level sender assembly
  • Outlet outside diameter of 0.375 inches with quick connect outlet type
  • Includes gasket and seal for secure installation
  • Four male pin terminals for reliable electrical connection
  • Standard replacement grade for dependable performance

Detailed Product Features and Specifications

The Delphi FG0125 fuel transfer unit is engineered for diesel fuel systems, featuring an internal strainer inlet type that helps prevent contaminants from entering the fuel system. It includes a fuel level sender assembly with resistance values ranging from 40 ohms (empty) to 250 ohms (full), providing accurate fuel gauge readings. The unit has two quick connect outlets with an outside diameter of 0.375 inches, facilitating easy and secure fuel line connections. The four male pin terminals ensure a stable electrical interface without the need for a regulator, as this unit does not include one. A gasket and seal are included to maintain a tight fit and prevent leaks during installation.

Applications and Common Issues Addressed

  • Restores proper fuel delivery in diesel Chevrolet Silverado 3500 and GMC Sierra 3500 trucks
  • Resolves inaccurate fuel gauge readings caused by faulty sender assemblies
  • Eliminates fuel contamination issues with the internal strainer design
  • Prevents fuel leaks with included gasket and seal components
  • Replaces worn or damaged in-tank fuel transfer units to maintain engine performance

Installation Notes and Tips

When installing the Delphi FG0125 fuel transfer unit, ensure the gasket and seal are properly seated to avoid fuel leaks. The unit’s quick connect outlets simplify fuel line attachment, but verify secure connections to prevent disconnections during operation. The four male pin terminals require compatible connectors; check wiring harness compatibility before installation. This unit is designed for in-tank installation, so follow vehicle-specific service manual instructions for safe removal and replacement of the fuel pump assembly in Chevrolet Silverado 3500 and GMC Sierra 3500 diesel trucks.

Quality Assurance and Warranty Information

Delphi manufactures the FG0125 fuel transfer unit to meet standard replacement grade specifications, ensuring reliable performance and durability. The product includes a fuel transfer unit with float arm, seal, and instruction sheet for proper installation. While specific warranty details may vary, Delphi products typically come with a limited warranty covering defects in materials and workmanship. Consult the product documentation or Delphi for exact warranty terms.

BrandDelphi
Part NumberFG0125
Fuel Level Sender Assembly IncludedYes
Fuel TypeDiesel
Gasket Or Seal IncludedYes
In Tank or ExternalIn Tank
Inlet TypeStrainer
Internal Or External StrainerInternal
Item GradeStandard Replacement
Outlet Outside Diameter0.375
Outlet Quantity2
Outlet TypeQuick Connect
Package ContentsFuel Transfer Unit w/Float Arm, Seal, Instruction Sheet
Regulator IncludedNo
Resistance Ohms Empty40.0
Resistance Ohms Full250.0
Strainer IncludedYes
Terminal GenderMale
Terminal Quantity4
Terminal TypePin
Vapor Pressure SensorNo

This part fits 8 vehicles. Search below:

YearMakeModelBody TypePositionNotes
2004ChevroletSilverado 3500Cab & ChassisN/AFor Auxiliary Fuel Tank; 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.
2004GMCSierra 3500Cab & ChassisN/AFor Auxiliary Fuel Tank; 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.
2003ChevroletSilverado 3500Cab & ChassisN/AFor Auxiliary Fuel Tank; 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.
2003GMCSierra 3500Cab & ChassisN/AFor Auxiliary Fuel Tank; 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.
2002ChevroletSilverado 3500Cab & ChassisN/AFor Auxiliary Fuel Tank; 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.
2002GMCSierra 3500Cab & ChassisN/AFor Auxiliary Fuel Tank; 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.
2001ChevroletSilverado 3500Cab & ChassisN/AFor Auxiliary Fuel Tank; 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.
2001GMCSierra 3500Cab & ChassisN/AFor Auxiliary Fuel Tank; 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:

1917726125320420EFG0125MU1873MU201P74214SP6242MSP6754M

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