Dorman 577-728 Fuel Filler Neck

Fuel Tank Filler Neck for Ford Super Duty

Dorman 577-728 is a steel fuel tank filler neck built for specific Ford Super Duty applications. It is precision-engineered and tested to match the original filler neck design for a direct repair on leaking fuel fill systems.

Key Features

• Steel construction for fuel system durability
• 17-inch overall length
• 1.5-inch inside diameter fill pipe
• No fuel cap included
• Direct replacement for the original filler neck on select Ford trucks

Detailed Description

This fuel filler neck is made for 1999-2010 Ford F-250 Super Duty and 1999-2010 Ford F-350 Super Duty trucks. Dorman 577-728 is engineered to match the original part’s fit and function, making it a practical choice when the factory filler neck is corroded, damaged, or leaking. It is a steel replacement designed for the fuel storage system and supports a reliable repair on Ford F-250 Super Duty and Ford F-350 Super Duty applications.

This part cross-references Ford (e.g., 8C3Z9034KE) for the same application.

What It Helps Fix

• Fuel leakage at the filler neck
• Corrosion or rust damage in the fill pipe
• Cracked or deteriorated fuel neck tubing
• Fuel odor caused by a compromised filler neck
• Refueling issues related to a damaged neck assembly

Installation Notes and Tips

Verify vehicle year, make, and model before installation. Confirm the 1.5-inch inside diameter and 17-inch length match the original part on your truck. Inspect surrounding fuel system components, clamps, and seals during replacement so the repair addresses the full leak source.

Quality Assurance

Dorman tests this replacement filler neck to match the original design for the listed Ford Super Duty applications. The part is built as a direct-fit repair component for consistent installation and function.