HomeAir and Fuel Delivery > Gaskets and Sealing SystemsDorman 577-501 Fuel Filler Neck Seal
Part #: 577-501

Dorman 577-501 Fuel Filler Neck Seal

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⚙️ 33 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Ford, Mercury, and Lincoln, Crown Victoria, Grand Marquis, Mustang, Town Car, and Marauder
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Overview of Dorman Fuel Filler Neck Seal 577-501

The Dorman 577-501 fuel filler neck seal is designed to provide a reliable seal for the fuel tank filler neck on select Ford, Lincoln, and Mercury vehicles. Made from durable rubber, this gasket ensures a secure fit and helps prevent fuel leaks and contamination.

  • Material: High-quality rubber for durability and flexibility
  • Inside Diameter: 1.3 inches for precise fitment
  • Outside Diameter: 2.5 inches to match OEM specifications
  • Thickness: 0.9 inches for effective sealing
  • Package includes one fuel tank filler neck grommet

Detailed Product Description

The Dorman 577-501 fuel filler neck seal is engineered to meet the exact dimensions required for proper installation on Ford Crown Victoria, Lincoln Town Car, Mercury Grand Marquis, Ford Mustang, and Mercury Marauder models. Constructed from rubber, this seal offers resistance to fuel and environmental elements, maintaining a tight seal between the fuel filler neck and the fuel tank. The 1.3-inch inside diameter and 2.5-inch outside diameter ensure compatibility with the original equipment, while the 0.9-inch thickness provides a secure barrier against leaks and vapor loss.

Compatible Vehicles and Common Applications

  • Ford Crown Victoria fuel filler neck seal replacement
  • Lincoln Town Car fuel filler neck gasket installation
  • Mercury Grand Marquis fuel tank filler neck seal repair
  • Ford Mustang fuel filler neck grommet maintenance
  • Mercury Marauder fuel filler neck seal replacement

Installation Notes and Tips

  • Ensure the fuel filler neck and surrounding area are clean and free of debris before installation
  • Lubricate the rubber seal lightly with a compatible lubricant to ease installation
  • Check for any damage or corrosion on the filler neck that may affect the seal
  • Press the seal firmly into place to ensure a tight fit without gaps
  • Verify the seal after installation by inspecting for leaks during refueling

Quality Assurance and Warranty Information

Dorman manufactures the 577-501 fuel filler neck seal to meet or exceed OEM standards for fit, form, and function. The rubber material is selected for its resistance to fuel and environmental exposure, ensuring long-lasting performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship to provide confidence in the product's reliability.

BrandDorman
Part Number577-501
Inside Diameter1.3
MaterialRubber
Outside Diameter2.5
Package ContentsFuel Tank Filler Neck Grommet
Thickness0.9

This part fits 33 vehicles. Search below:

YearMakeModelPositionNotes
2006FordCrown VictoriaN/A
2006MercuryGrand MarquisN/A
2005FordCrown VictoriaN/A
2005MercuryGrand MarquisN/A
2004FordCrown VictoriaN/A
2004FordMustangN/A
2004LincolnTown CarN/A
2004MercuryGrand MarquisN/A
2004MercuryMarauderN/A
2003FordCrown VictoriaN/A
2003FordMustangN/A
2003LincolnTown CarN/A
2003MercuryGrand MarquisN/A
2003MercuryMarauderN/A
2002FordCrown VictoriaN/A
2002FordMustangN/A
2002LincolnTown CarN/A
2002MercuryGrand MarquisN/A
2001FordCrown VictoriaN/A
2001FordMustangN/A
2001LincolnTown CarN/A
2001MercuryGrand MarquisN/A
2000FordCrown VictoriaN/A
2000FordMustangN/A
2000LincolnTown CarN/A
2000MercuryGrand MarquisN/A
1999FordCrown VictoriaN/A
1999FordMustangN/A
1999LincolnTown CarN/A
1999MercuryGrand MarquisN/A
1998FordCrown VictoriaN/A
1998LincolnTown CarN/A
1998MercuryGrand MarquisN/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

2R3Z9072AAFNA05

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.