Dorman 579-127 Fuel Tank Lock Ring

Overview of Dorman Fuel Tank Lock Ring 579-127

The Dorman 579-127 fuel tank lock ring is a durable steel component designed for secure fuel tank sealing on select Chrysler, Dodge, Jeep, and Ram vehicles. Engineered to meet OEM specifications, this lock ring ensures a reliable fit and long-lasting performance for models including the Ram 1500, Jeep Wrangler, and Dodge Avenger.

• Constructed from robust steel with a black finish for corrosion resistance
• Inside diameter of 4.915 inches and outside diameter of 7.75 inches
• Lock ring diameter options of 6.625 inches and 5.925 inches for precise fitment
• Thickness and rim width both measure 0.105 inches for secure sealing
• Compatible with multiple Chrysler, Dodge, Jeep, and Ram models from various years
• Includes one fuel tank lock ring per package

Detailed Product Description

The Dorman 579-127 fuel tank lock ring is manufactured from high-quality steel, providing strength and durability necessary for maintaining a secure seal on the fuel tank. Its black finish offers additional protection against rust and environmental wear. The lock ring features an inside diameter of 4.915 inches and an outside diameter of 7.75 inches, with a consistent thickness and rim width of 0.105 inches. This precise sizing ensures compatibility with fuel tanks requiring lock rings measuring 6.625 inches or 5.925 inches in diameter. Designed specifically for use on Chrysler, Dodge, Jeep, and Ram vehicles, this part supports models such as the Ram 1500 Classic, Jeep Grand Cherokee, Dodge Caliber, and Jeep Wrangler JK, among others.

Common Applications and Problem Resolution

• Secures the fuel tank sending unit to prevent fuel leaks
• Replaces worn or damaged lock rings that cause fuel odor or vapor leaks
• Restores proper fuel system sealing after fuel tank or sending unit service
• Prevents contamination of fuel by maintaining a tight seal
• Eliminates fuel system pressure loss due to faulty lock ring installation

Installation Notes and Tips

• Ensure the fuel tank and sending unit surfaces are clean before installation
• Verify the lock ring diameter matches the vehicle’s fuel tank specifications
• Use appropriate tools to evenly tighten the lock ring without over-torquing
• Inspect the lock ring for damage or deformation before installation
• Consult the vehicle’s service manual for torque specifications and installation procedures

Quality Assurance and Warranty

Dorman parts are engineered to meet or exceed OEM standards, providing reliable performance and fitment. The 579-127 fuel tank lock ring undergoes rigorous quality control to ensure durability and corrosion resistance. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Refer to Dorman’s official warranty documentation for complete terms.