Dorman 579-019 Fuel Tank Sending Unit Lock Ring

Reliable Fuel Tank Sending Unit Lock Ring for Nissan and Infiniti

The Dorman 579-019 fuel tank sending unit lock ring is engineered to provide a secure seal and reliable fitment for various Nissan and Infiniti models. Constructed from durable steel rubber, this lock ring ensures a tight connection to maintain fuel system integrity.

• Material: Steel rubber for durability and flexibility
• Inside Diameter: 4.375 inches
• Outside Diameter: 5.12 inches
• Lock Ring Diameter: 6.22 inches
• Includes gasket or seal for proper sealing
• Package contains one fuel pump lock ring

Durable Construction and Precise Dimensions

The Dorman 579-019 lock ring is designed with precise dimensions to fit securely around the fuel tank sending unit. Its steel rubber construction offers resistance to fuel and environmental factors, helping to prevent leaks and maintain system pressure. The included gasket or seal enhances the sealing capability, reducing the risk of fuel vapor or liquid escaping. This lock ring is compatible with a wide range of Nissan and Infiniti vehicles, including the 350Z, 370Z, Maxima, Pathfinder, Sentra, and Infiniti Q50, Q60, and FX series models.

Compatible Nissan and Infiniti Models

This fuel tank sending unit lock ring is compatible with the following makes and models:

• Nissan 350Z, 370Z, Frontier, Maxima, Pathfinder, Sentra, Xterra
• Infiniti EX35, EX37, FX35, FX37, FX45, FX50, G20, G25, G35, G37, GT-R, I30, I35, M35, M35h, M37, M45, M56, Q50, Q60, Q70, Q70L, QX4, QX50, QX70

Common Applications and Problem Resolution

This lock ring is used to secure the fuel tank sending unit in place, ensuring proper fuel level readings and preventing fuel leaks. It addresses issues such as:

• Fuel leaks caused by worn or damaged lock rings
• Improper sealing leading to fuel vapor escape
• Loose fuel pump assembly connections
• Fuel system pressure loss due to faulty seals
• Replacement during fuel pump or sending unit service

Installation Notes and Tips

When installing the Dorman 579-019 lock ring, ensure the gasket or seal is properly seated to prevent leaks. Use appropriate tools to avoid damaging the steel rubber material. Verify the lock ring diameter matches the fuel tank sending unit for a secure fit. This part does not include mounting hardware, so retain original fasteners or acquire compatible hardware as needed.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications. The 579-019 fuel tank sending unit lock ring undergoes quality checks to ensure durability and fitment accuracy. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship.