Dorman 579-002 Fuel Tank Sending Unit Lock Ring

Fuel Tank Sending Unit Lock Ring

Dorman 579-002 is a fuel tank sending unit lock ring used to secure the fuel pump assembly to the tank opening. Built from steel and rubber, it provides a service replacement for vehicles that need a new retaining ring during fuel sender or pump service.

Compatible with classic Chevrolet Camaro, Corvette, and Nova applications, as well as select Buick Skylark models, this Dorman 579-002 lock ring is a direct-fit service part for fuel tank maintenance. It includes a gasket or seal for sealing support at the sending unit interface.

Key Features

• Steel and rubber construction for durable service
• Retains the fuel pump assembly at the tank lock opening
• Includes gasket or seal
• Lock ring diameter: 2.68 in.
• Inside diameter: 1.75 in.
• Direct replacement for service work on the fuel sender assembly

Detailed Description

When servicing the fuel tank sending unit, the retaining ring should be replaced if wear, distortion, or corrosion is present. Dorman 579-002 is made to hold the fuel pump assembly securely in place at the tank opening, helping maintain a proper seal and stable mounting interface. This part cross-references Spectra Premium LO02 for the same application.

Fits 1971-1979 Chevrolet Corvette, N/A; Fits 1971-1979 Chevrolet Nova, N/A; Fits 1974-1979 Chevrolet Camaro, N/A; Fits 1971-1972 Buick Skylark, N/A; Fits 1976-1979 Buick Skylark, N/A. Search terms such as fuel tank sending unit lock ring for Chevrolet Corvette, Dorman 579-002 for Camaro fuel pump service, and Buick Skylark sending unit retaining ring all point to this application.

Common Repair Uses

• Replacing a corroded or damaged fuel sender retaining ring
• Restoring secure fuel pump assembly retention at the tank
• Addressing sealing issues at the sending unit opening
• Servicing a fuel tank sender during pump or gauge repair
• Correcting fitment problems caused by a worn lock ring

Installation Notes

Inspect the tank opening, sender flange, and sealing surfaces before installation. Replace the ring during fuel sender service if the original ring shows rust, deformation, or poor retention. Verify the 1.75 in. inside diameter and 2.68 in. lock ring diameter against the vehicle application before assembly.

Quality Assurance

Dorman manufactures replacement hardware for fuel system service using durable materials selected for reliable operation in demanding under-tank conditions. Part number 579-002 is built as a service replacement for retaining the fuel tank sending unit assembly.