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Dorman 579-128 Fuel Tank Lock Ring
Durable Fuel Tank Lock Ring for Ford and Lincoln Vehicles
The Dorman 579-128 fuel tank lock ring is designed to provide a secure seal for your fuel tank assembly. Engineered with quality plastic and rubber materials, this lock ring ensures reliable performance for Ford and Lincoln models including the Excursion, Expedition, F-250 Super Duty, F-350 Super Duty, and Navigator.
- Constructed from durable plastic and rubber for long-lasting use
- Includes a gasket and o-ring for a tight, leak-resistant seal
- Black color with precise dimensions: 6.6 inch inside diameter, 7.2 inch outside diameter
- Thickness of 1.2 inches and rim width of 1.2 inches for proper fitment
- Lock ring diameter measures 6.69 inches to match OEM specifications
Product Details and Specifications
This fuel tank lock ring from Dorman is manufactured with a combination of plastic and rubber materials to provide both strength and flexibility. The included gasket and o-ring help maintain a secure seal, preventing fuel leaks and contamination. With an inside diameter of 6.6 inches and an outside diameter of 7.2 inches, this lock ring fits precisely on compatible fuel tanks. The thickness and rim width of 1.2 inches ensure a snug fit, maintaining the integrity of the fuel system. The black finish matches OEM parts for a consistent appearance.
Compatible Vehicles and Applications
- Ford Excursion fuel tank lock ring replacement
- Ford Expedition fuel tank seal component
- Ford F-250 Super Duty fuel tank lock ring repair
- Ford F-350 Super Duty fuel tank hardware replacement
- Lincoln Navigator fuel tank lock ring installation
Installation Notes and Tips
When installing the Dorman 579-128 fuel tank lock ring, ensure the fuel tank surface is clean and free of debris. Properly seat the included o-ring and gasket to prevent leaks. Use appropriate tools to avoid damaging the plastic lock ring during installation. Verify the lock ring diameter matches the fuel tank opening to ensure a secure fit.
Quality Assurance and Warranty
Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance for your vehicle. The 579-128 fuel tank lock ring undergoes quality checks to ensure durability and fitment accuracy. Please refer to Dorman's warranty policy for specific coverage details.
| Brand | Dorman |
| Part Number | 579-128 |
| Material | Plastic |
| Material | Rubber |
| Color | Black |
| Inside Diameter | 6.6 |
| Thickness | 1.2 |
| Outside Diameter | 7.2 |
| Gasket Or Seal Included | Yes |
| Rim Width | 1.2 |
| Lock Ring Diameter (In) | 6.69 in |
| Package Contents | 1 lock ring; 1 o-ring |
This part fits 41 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2010 | Ford | F-250 Super Duty | 6.4L | V8 | DIESEL | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. |
| 2010 | Ford | F-350 Super Duty | 6.4L | V8 | DIESEL | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. |
| 2009 | Ford | F-250 Super Duty | 6.4L | V8 | DIESEL | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. |
| 2009 | Ford | F-350 Super Duty | 6.4L | V8 | DIESEL | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. |
| 2008 | Ford | F-250 Super Duty | 6.4L | V8 | DIESEL | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. |
| 2008 | Ford | F-350 Super Duty | 6.4L | V8 | DIESEL | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. |
| 2007 | Ford | F-250 Super Duty | 6.0L | V8 | DIESEL | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. |
| 2007 | Ford | F-350 Super Duty | 6.0L | V8 | DIESEL | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. |
| 2006 | Ford | F-250 Super Duty | 6.0L | V8 | DIESEL | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. |
| 2006 | Ford | F-350 Super Duty | 6.0L | V8 | DIESEL | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. |
| 2005 | Ford | Excursion | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 2005 | Ford | F-250 Super Duty | 6.0L | V8 | DIESEL | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. |
| 2005 | Ford | F-350 Super Duty | 6.0L | V8 | DIESEL | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. |
| 2004 | Ford | Excursion | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 2004 | Ford | F-250 Super Duty | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 2004 | Ford | F-350 Super Duty | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 2003 | Ford | Excursion | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 2003 | Ford | F-250 Super Duty | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 2003 | Ford | F-350 Super Duty | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 2002 | Ford | Excursion | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 2002 | Ford | Expedition | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 2002 | Ford | F-250 Super Duty | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 2002 | Ford | F-350 Super Duty | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 2002 | Lincoln | Navigator | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 2001 | Ford | Excursion | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 2001 | Ford | Expedition | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 2001 | Ford | F-250 Super Duty | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 2001 | Ford | F-350 Super Duty | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 2001 | Lincoln | Navigator | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 2000 | Ford | Excursion | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 2000 | Ford | Expedition | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 2000 | Ford | F-250 Super Duty | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 2000 | Ford | F-350 Super Duty | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 2000 | Lincoln | Navigator | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 1999 | Ford | Expedition | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 1999 | Ford | F-250 Super Duty | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 1999 | Ford | F-350 Super Duty | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 1999 | Lincoln | Navigator | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 1998 | Ford | Expedition | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 1998 | Lincoln | Navigator | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. | |||
| 1997 | Ford | Expedition | N/A | Engine Coolant Air Bleeder compatible with multiple vehicle models. |
* 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.