Spectra FN804 Fuel Tank Filler Neck

Spectra FN804 Fuel Tank Filler Neck

The Spectra FN804 fuel tank filler neck is an OE-style replacement for select GM full-size sedans. It is built with engineering, manufacturing, and quality control processes aimed at matching original equipment performance for a direct-fit repair.

• Fuel tank filler neck for air and fuel delivery repair
• OE replacement for select Buick, Cadillac, and GM applications
• Built to meet or exceed original equipment performance targets
• Fits 1998-2005 Buick Park Avenue
• Fits 2000-2005 Cadillac DeVille
• Fits 1998-2004 Cadillac Seville

Application Details

Compatible with 1998-2005 Buick Park Avenue, 2000-2005 Cadillac DeVille, and 1998-2004 Cadillac Seville, the FN804 is a practical solution when the original filler neck is corroded, damaged, or no longer sealing correctly. This Spectra fuel tank filler neck is identified by part number FN804 and is also referenced by cross-number TNKFN804 for the same application.

Common Repair Reasons

• Rust or corrosion at the filler neck
• Fuel odor caused by a compromised neck or seal area
• Difficulty refueling due to restricted fuel entry
• Damage from road debris or age-related metal fatigue
• Failed inspection related to visible fuel system deterioration

Installation Notes

Verify vehicle year, make, and model before installation. Compare the original filler neck routing, mounting points, and hose connections to the FN804 prior to removal of the old part. Clean surrounding fuel system areas during service and inspect related hoses and seals for wear.

Quality Assurance

Spectra Premium fuel filler necks are produced with engineering and quality control standards intended to match original equipment performance. Part number FN804 is built as a replacement for the listed Buick and Cadillac applications.