Spectra FN644 Fuel Filler Neck
OE Quality 60-Day Returns
Spectra

Spectra FN644 Fuel Filler Neck

Brand Spectra FN644
Fits Dodge · 37 vehicles

OE direct replacement. Meets or exceeds original equipment performance.

Fuel tank filler neck for dependable fuel delivery.

Cross-references Mopar 52113581AC, 577818 and D033 for the same application. See all 8.

$124.69Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $124.69
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Fuel Filler Neck options

Spectra FN644 Fuel Tank Filler Neck

The Spectra FN644 fuel tank filler neck is a direct replacement for select Dodge Ram trucks from 2004-2009. It is built to match original equipment performance for secure fuel transfer and dependable tank refueling.

  • OE-style replacement fuel tank filler neck for select Dodge Ram applications
  • Built with Spectra Premium engineering, manufacturing technology, and quality control
  • Matches original equipment performance expectations for the replaced part
  • Cross-references Mopar 52113581AC for the same application
  • Part number FN644 for ordering and fitment verification

Vehicle Fitment

  • Fits 2004-2008 Dodge Ram 1500, N/A
  • Fits 2006-2009 Dodge Ram 2500, N/A
  • Fits 2006 Dodge Ram 3500, N/A
  • Fits 2008-2009 Dodge Ram 3500, N/A

What This Part Helps Fix

  • Fuel filler neck corrosion or rust damage
  • Cracked or leaking filler neck tubing
  • Fueling issues caused by a damaged neck assembly
  • Fuel odor from a compromised filler path
  • Refueling problems on Dodge Ram 1500, Ram 2500, and Ram 3500 trucks

Installation Notes

Verify the vehicle year, make, model, and fuel system configuration before installation. Compare the original filler neck to FN644 and confirm the Mopar cross-reference 52113581AC when checking application details. Professional installation is recommended for proper fit and sealing.

Quality Assurance

Spectra Premium uses engineering, manufacturing technology, and quality control processes to help fuel filler necks meet or exceed the performance of the original equipment they replace.

Related reading

This part fits 37 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelBody TypeBed TypeLitersCylindersFuel TypePositionNotes
2009DodgeRam 2500Standard Cab Pickup—5.7LV8—N/A—
2009DodgeRam 2500Extended Crew Cab Pickup—5.7LV8—N/A—
2009DodgeRam 2500Crew Cab Pickup—5.7LV8—N/A—
2009DodgeRam 3500Standard Cab Pickup—5.7LV8—N/A—
2009DodgeRam 3500Extended Crew Cab Pickup—5.7LV8—N/A—
2009DodgeRam 3500Crew Cab Pickup—5.7LV8—N/A—
2008DodgeRam 1500——5.7LV8—N/A—
2008DodgeRam 1500——4.7LV8GASN/A—
2008DodgeRam 1500——3.7LV6—N/A—
2008DodgeRam 2500Standard Cab Pickup—5.7LV8—N/A—
2008DodgeRam 2500Extended Crew Cab Pickup—5.7LV8—N/A—
2008DodgeRam 2500Crew Cab Pickup—5.7LV8—N/A—
2008DodgeRam 3500—Fleetside5.7LV8—N/A—
2007DodgeRam 1500——5.7LV8—N/A—
2007DodgeRam 1500——4.7LV8GASN/A—
2007DodgeRam 1500——3.7LV6—N/A—
2007DodgeRam 2500Standard Cab Pickup—5.7LV8—N/A—
2007DodgeRam 2500Extended Crew Cab Pickup—5.7LV8—N/A—
2007DodgeRam 2500Crew Cab Pickup—5.7LV8—N/A—
2006DodgeRam 1500——8.3LV10—N/A—
2006DodgeRam 1500——5.7LV8—N/A—
2006DodgeRam 1500——4.7LV8GASN/A—
2006DodgeRam 1500——3.7LV6—N/A—
2006DodgeRam 2500Standard Cab Pickup—5.7LV8—N/A—
2006DodgeRam 2500Extended Crew Cab Pickup—5.7LV8—N/A—
2006DodgeRam 2500Crew Cab Pickup—5.7LV8—N/A—
2006DodgeRam 3500Standard Cab Pickup—5.7LV8—N/A—
2006DodgeRam 3500Extended Crew Cab Pickup—5.7LV8—N/A—
2006DodgeRam 3500Crew Cab Pickup—5.7LV8—N/A—
2005DodgeRam 1500——8.3LV10—N/A—
2005DodgeRam 1500——5.7LV8—N/A—
2005DodgeRam 1500——4.7LV8GASN/A—
2005DodgeRam 1500——3.7LV6—N/A—
2004DodgeRam 1500——8.3LV10—N/A—
2004DodgeRam 1500——5.7LV8—N/A—
2004DodgeRam 1500——4.7LV8GASN/A—
2004DodgeRam 1500——3.7LV6—N/A—
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Mopar — 52113581AC577818D033FND024FNSD024KFN90KFN93TNKFN644