HomeAir and Fuel Delivery > Hardware, Fasteners and FittingsDorman 579-011 Fuel Tank Sending Unit Lock Ring
Part #: 579-011

Dorman 579-011 Fuel Tank Sending Unit Lock Ring

⚙️ 87 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Ford, Lincoln, and Mercury, Crown Victoria, F-250 Super Duty, F-350 Super Duty, Grand Marquis, Marauder, Mustang, and Town Car
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Reliable Fuel Tank Sending Unit Lock Ring for Ford, Lincoln, and Mercury

The Dorman 579-011 fuel tank sending unit lock ring is designed to provide a secure seal and reliable fitment for select Ford, Lincoln, and Mercury vehicles. Engineered with durable rubber material, this lock ring ensures proper sealing and long-lasting performance for your fuel tank assembly.

  • Constructed from high-quality rubber for durability and flexibility
  • Inside diameter measures 4.61 inches for precise fit
  • Outside diameter of 6.56 inches ensures compatibility with fuel tank openings
  • Includes gasket or seal to maintain a tight, leak-free connection
  • Lock ring diameter of 4.5 inches designed for secure fastening
  • Package contains one fuel tank lock ring

Durable Rubber Construction and Precise Dimensions

This fuel tank sending unit lock ring is made from rubber, providing the necessary flexibility and resistance to fuel and environmental factors. The 4.61-inch inside diameter and 6.56-inch outside diameter are engineered to fit securely around the fuel tank sending unit, preventing leaks and ensuring proper operation. The included gasket or seal enhances the integrity of the fuel system by creating a reliable barrier against contaminants and fuel vapors.

Compatible Vehicles and Applications

The Dorman 579-011 lock ring is compatible with a range of Ford, Lincoln, and Mercury models, including the Crown Victoria, F-250 Super Duty, F-350 Super Duty, Grand Marquis, Marauder, Mustang, and Town Car. This part is specifically designed to meet the requirements of these vehicles’ fuel tank sending unit assemblies, making it a suitable replacement for worn or damaged lock rings.

  • Prevents fuel leaks caused by worn or damaged lock rings
  • Maintains proper sealing of the fuel tank sending unit
  • Helps avoid fuel system contamination and vapor leaks
  • Ensures secure mounting of the fuel tank sending unit
  • Restores fuel system integrity for affected Ford, Lincoln, and Mercury models

Installation Notes and Tips

When installing the Dorman 579-011 fuel tank sending unit lock ring, ensure the gasket or seal is properly seated to prevent leaks. Clean the fuel tank opening and sending unit flange before installation to remove debris or old sealant. Use appropriate tools to tighten the lock ring evenly, avoiding over-tightening which could damage the rubber material.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications, providing reliable performance and fitment. The 579-011 fuel tank sending unit lock ring undergoes quality checks to ensure durability and compatibility. Please refer to Dorman’s warranty policy for specific coverage details.

BrandDorman
Part Number579-011
MaterialRubber
Inside Diameter4.61
Outside Diameter6.56
Mounting Hardware IncludedYes
Gasket Or Seal IncludedYes
Lock Ring Diameter (In)4.5 in
Package Contents1 fuel tank lock ring

This part fits 87 vehicles. Search below:

YearMakeModelPositionNotes
2011FordCrown VictoriaN/A
2011LincolnTown CarN/A
2011MercuryGrand MarquisN/A
2010FordCrown VictoriaN/A
2010LincolnTown CarN/A
2010MercuryGrand MarquisN/A
2009FordCrown VictoriaN/A
2009LincolnTown CarN/A
2009MercuryGrand MarquisN/A
2008FordCrown VictoriaN/A
2008LincolnTown CarN/A
2008MercuryGrand MarquisN/A
2007FordCrown VictoriaN/A
2007FordF-250 Super DutyN/AMetal
2007FordF-350 Super DutyN/AMetal
2007LincolnTown CarN/A
2007MercuryGrand MarquisN/A
2006FordCrown VictoriaN/A
2006FordF-250 Super DutyN/AMetal
2006FordF-350 Super DutyN/AMetal
2006LincolnTown CarN/A
2006MercuryGrand MarquisN/A
2005FordCrown VictoriaN/A
2005FordF-250 Super DutyN/AMetal
2005FordF-350 Super DutyN/AMetal
2005LincolnTown CarN/A
2005MercuryGrand MarquisN/A
2004FordCrown VictoriaN/A
2004FordF-250 Super DutyN/AMetal
2004FordF-350 Super DutyN/AMetal
2004FordGrand MarquisN/A
2004FordMustangN/A
2004LincolnTown CarN/A
2004MercuryGrand MarquisN/A
2004MercuryMarauderN/A
2003FordCrown VictoriaN/A
2003FordF-250 Super DutyN/AMetal
2003FordF-350 Super DutyN/AMetal
2003FordGrand MarquisN/A
2003FordMustangN/A
2003LincolnTown CarN/A
2003MercuryGrand MarquisN/A
2003MercuryMarauderN/A
2002FordCrown VictoriaN/A
2002FordF-250 Super DutyN/AMetal
2002FordF-350 Super DutyN/AMetal
2002FordGrand MarquisN/A
2002FordMustangN/A
2002LincolnTown CarN/A
2002MercuryGrand MarquisN/A
2001FordCrown VictoriaN/A
2001FordF-250 Super DutyN/AMetal
2001FordF-350 Super DutyN/AMetal
2001FordGrand MarquisN/A
2001FordMustangN/A
2001LincolnTown CarN/A
2001MercuryGrand MarquisN/A
2000FordCrown VictoriaN/A
2000FordF-250 Super DutyN/AMetal
2000FordF-350 Super DutyN/AMetal
2000FordGrand MarquisN/A
2000FordMustangN/A
2000LincolnTown CarN/A
2000MercuryGrand MarquisN/A
1999FordCrown VictoriaN/A
1999FordF-350 Super DutyN/AMetal
1999FordGrand MarquisN/A
1999FordMustangN/A
1999LincolnTown CarN/A
1999MercuryGrand MarquisN/A
1998FordCrown VictoriaN/A
1998FordGrand MarquisN/A
1998FordMustangN/A
1998LincolnTown CarN/A
1998MercuryGrand MarquisN/A
1997FordCrown VictoriaN/A
1997FordGrand MarquisN/A
1997LincolnTown CarN/A
1997MercuryGrand MarquisN/A
1996FordCrown VictoriaN/A
1996FordGrand MarquisN/A
1996LincolnTown CarN/A
1996MercuryGrand MarquisN/A
1995FordCrown VictoriaN/A
1995FordGrand MarquisN/A
1995LincolnTown CarN/A
1995MercuryGrand 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:

5W1Z9276ALO57

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