Aumzong Fuel Filler Neck Pipe for Ford F-350/F-450/F-550 6.0L Diesel (2005–2007) — Direct-Fit, Reinforced Hose

Aumzong's fuel filler neck pipe is a direct-fit replacement hose engineered to restore proper fuel fill and venting on 2005–2007 Ford F-350, F-450, and F-550 Super Duty 6.0L diesel trucks.

If your truck shows signs of a worn, cracked, or leaking filler neck hose, this Aumzong replacement aligns with OEM specifications and several factory part numbers (including FN782, 577-306, 4C3Z9034C). It’s produced from upgraded materials, tested to meet original-equipment performance, and designed to install without modification so you can return the fuel delivery path to safe operation.

How does this filler neck pipe match my Ford Super Duty?

This Aumzong filler neck is built to match the fit and function of the factory part for 2005–2007 6.0L diesel Ford Super Duty models. It corresponds to multiple OEM numbers so installers can verify compatibility before buying.

• Direct-fit for Ford F-350, F-450, F-550 with 6.0L diesel (2005–2007).
• Cross-references: FN782, 577-306, 4C3Z9034C and related OE codes.
• Designed to replace the original piece without trimming or adapters.

What materials and testing ensure durability?

Aumzong upgraded the material mix and construction to improve wear resistance and longevity compared with aged OEM hoses. Functional testing verifies proper sealing and venting under typical operating conditions.

• Reinforced hose compound resists cracking from heat and fuel exposure.
• Quality checks and functional tests replicate installation stresses.
• Manufactured to meet or approach OEM dimensional tolerances.

How easy is installation and what should I check first?

Installation is straightforward for anyone familiar with fuel system work: remove the old filler neck, compare OE numbers, and fit the new assembly in place. Always work in a well-ventilated area and follow safety precautions for fuel-handling jobs.

• Compare the OE number printed on your old part to 577-306 / FN782 before purchase.
• Fitment is intended to be bolt-on with existing clamps and mounting points.
• Inspect adjacent clamps, grommets, and vent hoses while replacing the filler neck.

Will this part solve leaks and fuel-smell problems?

Replacing a degraded filler neck is a common fix for leaks, fuel odors, and difficulty filling the tank caused by cracked or collapsed hoses. While this part addresses the hose itself, inspect related components to ensure a complete repair.

• Eliminates leaks caused by split or brittle filler neck hoses.
• Restores proper venting and filler flow when installed correctly.
• Check tank seals, cap, and vent lines to rule out other sources of fuel odor.

Who is this for: This Aumzong filler neck pipe is intended for owners and mechanics of 2005–2007 Ford Super Duty 6.0L diesel trucks who need a reliable, OEM-referenced replacement without extensive modification. It’s suitable for DIY-savvy truck owners, independent shops seeking a value alternative to dealer parts, and fleet maintenance teams wanting consistent, tested components. Remember to confirm your vehicle’s OE part number before ordering to ensure proper fitment.