Dorman 579-010 Fuel Tank Sending Unit Lock Ring

Reliable Fuel Tank Sending Unit Lock Ring for Nissan and Infiniti

The Dorman 579-010 fuel tank sending unit lock ring is designed to provide a secure seal and reliable fitment for various Nissan and Infiniti models. Made from durable rubber, this lock ring ensures proper sealing and mounting of the fuel tank sending unit, helping maintain fuel system integrity.

• Constructed from high-quality rubber material for durability and flexibility
• Inside diameter measures 4.39 inches, outside diameter 4.9 inches
• Lock ring diameter of 4.25 inches for precise fitment
• Includes mounting hardware and gasket/seal for complete installation
• Compatible with multiple Nissan and Infiniti models including 200SX, 300ZX, Altima, D21, Frontier, I30, Maxima, Pathfinder, Pickup, Pulsar NX, and Sentra

Product Details and Specifications

The Dorman 579-010 lock ring is engineered to secure the fuel tank sending unit firmly in place, preventing leaks and ensuring accurate fuel level readings. Its rubber construction provides a reliable seal that withstands exposure to fuel and environmental conditions. The included mounting hardware and gasket simplify installation, reducing the need for additional parts. With an inside diameter of 4.39 inches and an outside diameter of 4.9 inches, this lock ring fits precisely within the fuel tank assembly. The 4.25-inch lock ring diameter matches OEM specifications for compatible Nissan and Infiniti vehicles.

Compatible Nissan and Infiniti Models

• Nissan 200SX, 300ZX, Altima, D21, Frontier, I30, Maxima, Pathfinder, Pickup, Pulsar NX, Sentra
• Infiniti I30

Common Applications and Issues Addressed

• Secures the fuel tank sending unit to prevent fuel leaks
• Maintains accurate fuel level sensor readings
• Replaces worn or damaged lock rings causing fuel system malfunctions
• Prevents fuel vapor leaks that can trigger check engine lights
• Ensures proper sealing to avoid contamination of fuel system components

Installation Notes and Tips

Before installation, ensure the fuel tank sending unit and surrounding area are clean and free of debris. Use the included gasket and mounting hardware to achieve a secure and leak-free fit. Verify the lock ring diameter matches the fuel tank opening to avoid improper sealing. Tighten the lock ring evenly to prevent warping or damage to the rubber material. Consult vehicle-specific service manuals for torque specifications and detailed installation procedures.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The 579-010 fuel tank sending unit lock ring undergoes quality inspections to ensure proper fit and function. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Refer to Dorman’s official warranty policy for complete information.