Dorman 577-095 Fuel Filler Neck

Fuel Tank Filler Neck for GM Trucks

Dorman 577-095 is a steel fuel tank filler neck built for specific Chevrolet Silverado and GMC Sierra applications from 1999-2004. It is precision-engineered and tested to match the original filler neck design for a direct repair on vehicles with a leaking fuel filler neck.

Key Features

• Steel construction for durability in fuel system service
• 36.2-inch length for the specified GM truck applications
• 1-inch inside diameter fill pipe
• No fuel cap included
• Direct replacement for the original filler neck on listed vehicles

Detailed Description

This Dorman fuel filler neck, part number 577-095, is made for Chevrolet Silverado and GMC Sierra trucks that need a replacement for a leaking or damaged filler neck. It is engineered to match the original part’s fit and function for the listed years, helping restore proper fuel transfer from the fuel door area to the tank. The steel design supports long-term service in a demanding underbody location, and the dimensions are matched to the original application for a reliable repair.

This part cross-references Spectra Premium FN795 for the same application.

What It Helps Fix

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

Installation Notes and Tips

Verify vehicle fitment before installation. This fuel filler neck is listed for 1999-2004 Chevrolet Silverado 1500, 1999-2003 Chevrolet Silverado 2500, 2001-2003 Chevrolet Silverado 1500 HD, 2001-2003 Chevrolet Silverado 2500 HD, 2001-2003 Chevrolet Silverado 3500, 1999-2004 GMC Sierra 1500, 1999-2002 GMC Sierra 2500, 2001-2003 GMC Sierra 1500 HD, 2001-2003 GMC Sierra 2500 HD, and 2001-2003 GMC Sierra 3500. Compare the original neck length, diameter, and routing before installation to confirm proper alignment with the fuel tank and body opening.

Quality Assurance

Dorman states that this replacement filler neck is thoroughly tested and engineered to match the original part for the specified vehicle applications. Part number 577-095 is built as an OE-style repair solution for the listed Chevrolet Silverado and GMC Sierra trucks.