HomeAir and Fuel Delivery > Fuel StorageSpectra FN644 Fuel Filler Neck
Part #: FN644

Spectra FN644 Fuel Filler Neck

⚙️ 37 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Dodge, Ram 2500, Ram 3500, and Ram 1500
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Overview of Spectra Fuel Tank Filler Neck FN644

The Spectra FN644 fuel tank filler neck is designed specifically for Dodge Ram 1500, Ram 2500, and Ram 3500 models. This component ensures a secure and reliable connection between the fuel filler cap and the fuel tank, maintaining proper fuel system integrity.

  • Compatible with Dodge Ram 1500, Ram 2500, and Ram 3500
  • Durable construction for long-lasting performance
  • Direct replacement for original fuel tank filler neck
  • Part number FN644 for precise identification
  • Designed to meet OEM specifications

Detailed Product Description

The Spectra FN644 fuel tank filler neck is engineered to provide a precise fit for Dodge Ram 1500, Ram 2500, and Ram 3500 trucks. This fuel storage component connects the fuel filler opening to the fuel tank, allowing for safe and efficient refueling. Manufactured to meet or exceed OEM standards, the FN644 ensures proper sealing and prevents fuel vapor leaks. Its robust design helps resist corrosion and wear caused by exposure to fuel and environmental elements.

Common Applications and Problem Solving

  • Replacement for cracked or damaged fuel tank filler necks
  • Eliminates fuel leaks during refueling
  • Prevents fuel vapor escape and related emissions issues
  • Restores proper fuel system pressure and function
  • Addresses fitment issues with aftermarket or worn parts

Installation Notes and Tips

Installation of the Spectra FN644 fuel tank filler neck requires basic mechanical skills and tools. Ensure the vehicle is parked on a level surface and the fuel system is depressurized before beginning. Remove the old filler neck carefully to avoid damage to surrounding components. Verify the new filler neck aligns correctly with the fuel tank inlet and filler cap. Tighten all clamps and fasteners securely to prevent leaks. It is recommended to inspect the fuel cap and related seals during installation.

Quality Assurance and Warranty

Spectra manufactures the FN644 fuel tank filler neck to meet stringent quality standards. Each unit undergoes thorough testing to ensure durability and fitment accuracy for Dodge Ram 1500, Ram 2500, and Ram 3500 models. While specific warranty details may vary, Spectra typically offers coverage against manufacturing defects. Consult product documentation or the manufacturer for exact warranty terms.

This part fits 37 vehicles. Search below:

YearMakeModelBody TypeBed TypeLitersCylindersFuel TypePositionNotes
2009DodgeRam 2500Standard Cab Pickup5.7LV8N/A
2009DodgeRam 2500Extended Crew Cab Pickup5.7LV8N/A
2009DodgeRam 2500Crew Cab Pickup5.7LV8N/A
2009DodgeRam 3500Standard Cab Pickup5.7LV8N/A
2009DodgeRam 3500Extended Crew Cab Pickup5.7LV8N/A
2009DodgeRam 3500Crew Cab Pickup5.7LV8N/A
2008DodgeRam 15005.7LV8N/A
2008DodgeRam 15004.7LV8GASN/A
2008DodgeRam 15003.7LV6N/A
2008DodgeRam 2500Standard Cab Pickup5.7LV8N/A
2008DodgeRam 2500Extended Crew Cab Pickup5.7LV8N/A
2008DodgeRam 2500Crew Cab Pickup5.7LV8N/A
2008DodgeRam 3500Fleetside5.7LV8N/A
2007DodgeRam 15005.7LV8N/A
2007DodgeRam 15004.7LV8GASN/A
2007DodgeRam 15003.7LV6N/A
2007DodgeRam 2500Standard Cab Pickup5.7LV8N/A
2007DodgeRam 2500Extended Crew Cab Pickup5.7LV8N/A
2007DodgeRam 2500Crew Cab Pickup5.7LV8N/A
2006DodgeRam 15008.3LV10N/A
2006DodgeRam 15005.7LV8N/A
2006DodgeRam 15004.7LV8GASN/A
2006DodgeRam 15003.7LV6N/A
2006DodgeRam 2500Standard Cab Pickup5.7LV8N/A
2006DodgeRam 2500Extended Crew Cab Pickup5.7LV8N/A
2006DodgeRam 2500Crew Cab Pickup5.7LV8N/A
2006DodgeRam 3500Standard Cab Pickup5.7LV8N/A
2006DodgeRam 3500Extended Crew Cab Pickup5.7LV8N/A
2006DodgeRam 3500Crew Cab Pickup5.7LV8N/A
2005DodgeRam 15008.3LV10N/A
2005DodgeRam 15005.7LV8N/A
2005DodgeRam 15004.7LV8GASN/A
2005DodgeRam 15003.7LV6N/A
2004DodgeRam 15008.3LV10N/A
2004DodgeRam 15005.7LV8N/A
2004DodgeRam 15004.7LV8GASN/A
2004DodgeRam 15003.7LV6N/A

* 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:

52113581AC577818D033FND024FNSD024KFN90KFN93TNKFN644

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