Dorman 577-944 Fuel Filler Neck

Overview of Dorman Fuel Tank Filler Neck 577-944

The Dorman 577-944 fuel tank filler neck is designed specifically for Nissan Pathfinder and Infiniti QX4 models. Constructed from durable steel, this fuel filler neck ensures reliable fuel delivery and venting for gasoline-powered vehicles.

• Material: Heavy-duty steel construction for durability
• Length: 36 inches for proper fitment
• Includes hose and mounting hardware for easy installation
• Vent line attached with one metal tube vent for proper fuel tank ventilation
• Fill pipe inside diameter: 1.5 inches, compatible with gas fuel type
• Color: Black finish for corrosion resistance
• Package includes one fuel filler neck (fuel cap not included)

Detailed Product Description

The Dorman 577-944 fuel tank filler neck is engineered to meet the specifications of Nissan Pathfinder and Infiniti QX4 vehicles. Its 36-inch steel tube provides a secure and corrosion-resistant path for fuel to flow from the filler opening to the fuel tank. The included hose and mounting hardware simplify the replacement process, while the attached vent line with a metal tube vent ensures proper tank ventilation to prevent pressure buildup. The 1.5-inch inside diameter fill pipe is optimized for gasoline fuel delivery, maintaining compatibility with the vehicle's fuel system requirements.

Common Applications and Problem Resolution

• Replacement for damaged or corroded fuel filler necks on Nissan Pathfinder and Infiniti QX4
• Solves fuel leaks caused by cracks or holes in the filler neck
• Addresses fuel tank venting issues that can cause refueling difficulties or pressure problems
• Prevents fuel contamination by maintaining a sealed fuel delivery path
• Restores proper fuel flow and venting for improved vehicle operation

Installation Notes and Tips

Installation of the Dorman 577-944 fuel tank filler neck is straightforward with the included mounting hardware and hose. 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 vent line is properly connected to maintain fuel tank pressure balance. Tighten all clamps and fasteners securely to prevent leaks.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 577-944 fuel tank filler neck undergoes rigorous quality control to ensure durability and performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Refer to Dorman's official warranty documentation for exact terms.