Dorman 579-053 Fuel Tank Sending Unit Lock Ring

Durable Fuel Tank Sending Unit Lock Ring for Select GM Vehicles

The Dorman 579-053 fuel tank sending unit lock ring is engineered to provide a secure and reliable seal for fuel tank sending units on various GM trucks and SUVs. Crafted from metal, this lock ring ensures a precise fit and long-lasting durability for models including Chevrolet Silverado, GMC Sierra, and Cadillac Escalade.

• Constructed from sturdy metal for enhanced durability
• Inside diameter measures 3.469 inches for accurate fitment
• Outside diameter and lock ring diameter both 5.7 inches for secure sealing
• Compatible with multiple GM makes and models including Buick, Chevrolet, GMC, Cadillac, and Oldsmobile
• Package includes one fuel tank sending unit lock ring

Product Details and Specifications

The Dorman 579-053 lock ring is designed specifically for fuel tank sending units, providing a tight and secure connection to prevent fuel leaks and maintain system integrity. With an inside diameter of 3.469 inches and an outside diameter of 5.7 inches, this metal lock ring fits a range of GM vehicles such as the Chevrolet Avalanche 1500 and 2500, GMC Sierra 1500 HD, and Cadillac Escalade. The lock ring diameter of 5.7 inches ensures compatibility with factory fuel tank components, making it a reliable replacement part for maintenance or repair.

Compatible Vehicles and Applications

• Buick Century and Regal
• Cadillac Escalade
• Chevrolet Avalanche, Blazer, Silverado, Suburban, Tahoe, Trailblazer, and SSR
• GMC Envoy, Sierra, Savana, Yukon, and Yukon XL
• Oldsmobile Bravada

Common Issues Addressed by This Lock Ring

• Fuel leaks caused by worn or damaged lock rings
• Loose or improperly sealed fuel tank sending units
• Replacement during fuel system maintenance or sending unit replacement
• Corrosion or metal fatigue in original lock ring components
• Ensuring proper fuel gauge readings by securing the sending unit

Installation Notes and Tips

Installation of the Dorman 579-053 lock ring requires removal of the fuel tank sending unit. Ensure the fuel tank is properly drained and the vehicle is safely supported before beginning. This lock ring does not include mounting hardware or gaskets, so reuse existing seals or replace as necessary. Use appropriate tools to avoid damaging the lock ring or fuel tank components during installation. Verify the lock ring is seated evenly to maintain a proper seal.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications, providing reliable performance and fitment. The 579-053 fuel tank sending unit lock ring is made from high-quality metal to resist corrosion and wear. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship to ensure customer confidence in replacement parts.