Spectra FN785 Fuel Filler Neck

Brand Spectra 30-4891
Coil Wire Included No
Color Gray
Cylinders 8
Distributor Cap Included No
Distributor Type Magnetic Coil
E-Waste Yes
Electronic Module Supplied No
Ignition Rotor Included No
Integrated Ignition Coil No
Product Condition Remanufactured
Fits —48 vehicles

OE direct replacement. Meets or exceeds original equipment performance.

Fuel filler neck. Built for dependable fuel storage system service.

Cross-references 3C3Z9034A, 577228 and F071 for the same application. See all 8.

$149.00Free shipping
In stock · usually ships same day before 1pm CST
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Step 2 — Quantity
Order total $149.00
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Free returns within 60 days if it doesn't fit when fitment is verified.

Spectra FN785 Fuel Tank Filler Neck

The Spectra FN785 fuel tank filler neck is an OE-style replacement for select Ford Super Duty trucks. It is built for 1999-2004 Ford F-250 Super Duty and 1999-2004 Ford F-350 Super Duty applications, with engineering and quality control aimed at matching original equipment performance.

Key Features

  • Direct replacement fuel tank filler neck for select Ford truck applications
  • Built to meet or exceed original equipment performance targets
  • Manufactured with controlled engineering and production processes
  • Fits 1999-2004 Ford F-250 Super Duty and 1999-2004 Ford F-350 Super Duty
  • Part number FN785 for easy catalog and cross-reference lookup

Application Details

Compatible With 1999-2004 Ford F-250 Super Duty and 1999-2004 Ford F-350 Super Duty fuel system service needs. The FN785 is a practical replacement when the original filler neck is corroded, damaged, or no longer sealing properly. This part cross-references Ford OE number F81Z9034AA for the same application.

Common Issues This Part Can Address

  • Fuel leakage at the filler neck area
  • Rust or corrosion on the original neck assembly
  • Damage from road debris or impact
  • Fueling difficulty caused by a worn or distorted neck
  • Fuel odor from a compromised filler tube connection

Installation Notes

Verify vehicle year and model before installation. Compare the original filler neck routing, mounting points, and hose connections to the FN785 before removal. On Ford F-250 Super Duty and Ford F-350 Super Duty trucks, inspect adjacent fuel system components for corrosion or wear during service.

Quality Assurance

Spectra Premium fuel filler necks are engineered and manufactured with quality control processes intended to match OE performance standards for the listed Ford applications.

This part fits 48 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelBody TypeBed LengthLitersCylindersPositionNotes
2004FordF-250 Super DutyStandard Cab Pickup6' 9" Foot Bed6.8LV10N/A—
2004FordF-250 Super DutyExtended Cab Pickup6' 9" Foot Bed6.8LV10N/A—
2004FordF-250 Super DutyStandard Cab Pickup6' 9" Foot Bed5.4LV8N/A—
2004FordF-250 Super DutyExtended Cab Pickup6' 9" Foot Bed5.4LV8N/A—
2004FordF-350 Super DutyStandard Cab Pickup6' 9" Foot Bed6.8LV10N/A—
2004FordF-350 Super DutyExtended Cab Pickup6' 9" Foot Bed6.8LV10N/A—
2004FordF-350 Super DutyStandard Cab Pickup6' 9" Foot Bed5.4LV8N/A—
2004FordF-350 Super DutyExtended Cab Pickup6' 9" Foot Bed5.4LV8N/A—
2003FordF-250 Super DutyStandard Cab Pickup6' 9" Foot Bed6.8LV10N/A—
2003FordF-250 Super DutyExtended Cab Pickup6' 9" Foot Bed6.8LV10N/A—
2003FordF-250 Super DutyStandard Cab Pickup6' 9" Foot Bed5.4LV8N/A—
2003FordF-250 Super DutyExtended Cab Pickup6' 9" Foot Bed5.4LV8N/A—
2003FordF-350 Super DutyStandard Cab Pickup6' 9" Foot Bed6.8LV10N/A—
2003FordF-350 Super DutyExtended Cab Pickup6' 9" Foot Bed6.8LV10N/A—
2003FordF-350 Super DutyStandard Cab Pickup6' 9" Foot Bed5.4LV8N/A—
2003FordF-350 Super DutyExtended Cab Pickup6' 9" Foot Bed5.4LV8N/A—
2002FordF-250 Super DutyStandard Cab Pickup6' 9" Foot Bed6.8LV10N/A—
2002FordF-250 Super DutyExtended Cab Pickup6' 9" Foot Bed6.8LV10N/A—
2002FordF-250 Super DutyStandard Cab Pickup6' 9" Foot Bed5.4LV8N/A—
2002FordF-250 Super DutyExtended Cab Pickup6' 9" Foot Bed5.4LV8N/A—
2002FordF-350 Super DutyStandard Cab Pickup6' 9" Foot Bed6.8LV10N/A—
2002FordF-350 Super DutyExtended Cab Pickup6' 9" Foot Bed6.8LV10N/A—
2002FordF-350 Super DutyStandard Cab Pickup6' 9" Foot Bed5.4LV8N/A—
2002FordF-350 Super DutyExtended Cab Pickup6' 9" Foot Bed5.4LV8N/A—
2001FordF-250 Super DutyStandard Cab Pickup6' 9" Foot Bed6.8LV10N/A—
2001FordF-250 Super DutyExtended Cab Pickup6' 9" Foot Bed6.8LV10N/A—
2001FordF-250 Super DutyStandard Cab Pickup6' 9" Foot Bed5.4LV8N/A—
2001FordF-250 Super DutyExtended Cab Pickup6' 9" Foot Bed5.4LV8N/A—
2001FordF-350 Super DutyStandard Cab Pickup6' 9" Foot Bed6.8LV10N/A—
2001FordF-350 Super DutyExtended Cab Pickup6' 9" Foot Bed6.8LV10N/A—
2001FordF-350 Super DutyStandard Cab Pickup6' 9" Foot Bed5.4LV8N/A—
2001FordF-350 Super DutyExtended Cab Pickup6' 9" Foot Bed5.4LV8N/A—
2000FordF-250 Super DutyStandard Cab Pickup6' 9" Foot Bed6.8LV10N/A—
2000FordF-250 Super DutyExtended Cab Pickup6' 9" Foot Bed6.8LV10N/A—
2000FordF-250 Super DutyStandard Cab Pickup6' 9" Foot Bed5.4LV8N/A—
2000FordF-250 Super DutyExtended Cab Pickup6' 9" Foot Bed5.4LV8N/A—
2000FordF-350 Super DutyStandard Cab Pickup6' 9" Foot Bed6.8LV10N/A—
2000FordF-350 Super DutyExtended Cab Pickup6' 9" Foot Bed6.8LV10N/A—
2000FordF-350 Super DutyStandard Cab Pickup6' 9" Foot Bed5.4LV8N/A—
2000FordF-350 Super DutyExtended Cab Pickup6' 9" Foot Bed5.4LV8N/A—
1999FordF-250 Super DutyStandard Cab Pickup6' 9" Foot Bed6.8LV10N/A—
1999FordF-250 Super DutyExtended Cab Pickup6' 9" Foot Bed6.8LV10N/A—
1999FordF-250 Super DutyStandard Cab Pickup6' 9" Foot Bed5.4LV8N/A—
1999FordF-250 Super DutyExtended Cab Pickup6' 9" Foot Bed5.4LV8N/A—
1999FordF-350 Super DutyStandard Cab Pickup6' 9" Foot Bed6.8LV10N/A—
1999FordF-350 Super DutyExtended Cab Pickup6' 9" Foot Bed6.8LV10N/A—
1999FordF-350 Super DutyStandard Cab Pickup6' 9" Foot Bed5.4LV8N/A—
1999FordF-350 Super DutyExtended Cab Pickup6' 9" Foot Bed5.4LV8N/A—
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
3C3Z9034A577228F071F81Z9034AAFNF071FNSF071JLCF071TNKFN785