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Autobest F8321A Fuel Pump Module Assembly
| Brand | Autobest F8321A |
|---|---|
| Average Current Draw(A) | 13 |
| Average Flow Rating(GPH) | 46.23 |
| Connector Gender | Male |
| Connector Quantity | 1 |
| Connector Shape | Rectangle |
| Country of Orign | China |
| Fuel Filter Included | Yes |
| Fuel Sending Unit Included | Yes |
| Fuel Tank Pressure Sensor Included | Yes |
| Gasket Or Seal Material | Nbr |
| Grade Type | Performance |
| Housing Material | Pom |
| In Tank or External | In tank |
| Installation Warnings | No |
| Internal Or External Strainer | Internal |
| Life Cycle Status Code | Available to order |
| Mounting Hardware Included | No |
| Negative Ground | Yes |
| Outlet Quantity | 1 |
| Package Contents | Fuel pump module assembly |
| Product Height (in) | 19.69 |
| Product Length (in) | 13.98 |
| Product Width (in) | 5.98 |
| Pump Type | Turbine |
| Resistance Ohms Empty | 250 |
| Resistance Ohms Full | 40 |
| Short Description | Fuel pump module assembly |
| Strainer Included | Yes |
| Terminal Gender | Male |
| Terminal Quantity | 4 |
| Product line | Fuel Pump Module Assembly |
| Fits | Chevrolet and GMC · 12 vehicles |
Performance-grade design. Built as a fuel pump module assembly for fuel system service.
Integrated components. Includes the fuel filter, sending unit, pressure sensor, and strainer.
In-tank layout. Uses a turbine pump with 12V operation and a male connector.
Cross-references Delphi FG2310 for the same application. See all 1.
Fuel delivery replacement
Autobest F8321A is a fuel pump module assembly for heavy-duty truck applications that need an in-tank replacement with integrated fuel system components. It is built as a performance-grade module with a turbine pump, 12V operation, and a male rectangular connector.
Fits 2017-2019 Chevrolet Silverado 2500 HD, N/A. Fits 2017-2019 Chevrolet Silverado 3500 HD, N/A. Fits 2017-2019 GMC Sierra 2500 HD, N/A. Fits 2017-2019 GMC Sierra 3500 HD, N/A.
Key features
- In-tank fuel pump module assembly for direct fuel system service.
- Turbine pump design with 46.23 GPH average flow rating.
- Includes fuel filter, fuel sending unit, fuel tank pressure sensor, and strainer.
- Male connector with 4-pin terminal layout and 12V electrical operation.
- NBR seal material and POM housing for fuel system use.
- Autobest F8321A cross-references Delphi FG2310 for the same application.
Detailed description
Autobest F8321A is a fuel pump module assembly engineered for in-tank service on Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, and GMC Sierra 3500 HD applications from 2017-2019. The module combines the pump, sending unit, fuel tank pressure sensor, filter, and internal strainer in one assembly to simplify fuel system replacement. The performance-grade design, 13-amp average current draw, and 46.23 GPH flow rating make it a practical choice for restoring fuel delivery on these truck platforms. The part number F8321A is also useful when verifying the correct module against service records or catalog listings.
Common issues this part can address
- Hard starting caused by weak fuel delivery.
- Fuel gauge readings that no longer track tank level correctly.
- Fuel pressure sensor faults tied to the module assembly.
- Reduced flow from a worn in-tank pump.
- Fuel system service needs on Silverado and Sierra HD trucks.
Installation notes and tips
Confirm connector style, terminal count, and tank-side fitment before installation. This module uses a male rectangular connector, 4 terminals, and an in-tank layout, so matching the original configuration is important. The part number F8321A should be checked against the vehicle service information and the existing module before removal.
Quality assurance
Autobest F8321A includes a limited lifetime warranty. The module is built as a performance-grade fuel pump assembly and cross-references Delphi FG2310 for the same application.
| Year | Make | Model | Submodel | Body Type | Bed Length | Liters | Cylinders | Fuel Type | Notes |
|---|---|---|---|---|---|---|---|---|---|
| 2019 | Chevrolet | Silverado 2500 HD | — | — | 8' 1" Foot Bed | 6.0L | V8 | FLEX | Fuel Pump Module Assembly |
| 2019 | Chevrolet | Silverado 3500 HD | WT | Crew Cab Pickup | 8' 1" Foot Bed | 6.0L | V8 | — | Fuel Pump Module Assembly |
| 2019 | GMC | Sierra 2500 HD | SLT | — | 8' 1" Foot Bed | 6.0L | V8 | — | Fuel Pump Module Assembly |
| 2019 | GMC | Sierra 3500 HD | Denali | — | 8' 1" Foot Bed | 6.0L | V8 | — | Fuel Pump Module Assembly |
| 2018 | Chevrolet | Silverado 2500 HD | — | — | 8' 1" Foot Bed | 6.0L | V8 | FLEX | Fuel Pump Module Assembly |
| 2018 | Chevrolet | Silverado 3500 HD | WT | Extended Cab Pickup | 8' 1" Foot Bed | 6.0L | V8 | — | Fuel Pump Module Assembly |
| 2018 | GMC | Sierra 2500 HD | SLT | — | 8' 1" Foot Bed | 6.0L | V8 | — | Fuel Pump Module Assembly |
| 2018 | GMC | Sierra 3500 HD | Denali | — | 8' 1" Foot Bed | 6.0L | V8 | — | Fuel Pump Module Assembly |
| 2017 | Chevrolet | Silverado 2500 HD | — | — | 8' 1" Foot Bed | 6.0L | V8 | — | Fuel Pump Module Assembly |
| 2017 | Chevrolet | Silverado 3500 HD | WT | Extended Cab Pickup | 8' 1" Foot Bed | 6.0L | V8 | — | Fuel Pump Module Assembly |
| 2017 | GMC | Sierra 2500 HD | SLT | — | 8' 1" Foot Bed | 6.0L | V8 | — | Fuel Pump Module Assembly |
| 2017 | GMC | Sierra 3500 HD | Denali | — | 8' 1" Foot Bed | 6.0L | V8 | — | Fuel Pump Module Assembly |
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