Dorman 579-035 Fuel Tank Sending Unit Lock Ring

Dorman 579-035 Fuel Tank Sending Unit Lock Ring

Dorman 579-035 is a fuel tank sending unit lock ring used to secure the fuel pump assembly to the tank opening after service. Built from metal with a rubber sealing component, it supports a tight, reliable retention point for fuel tank sending unit replacement on classic Jaguar applications.

Key Features

• Metal construction for durable retention at the fuel tank opening
• Rubber seal included to support a proper seal during sending unit service
• 2 in lock ring diameter with 1.95 in inside diameter and 2.59 in outside diameter
• Direct replacement for servicing the fuel pump assembly retaining ring
• Compatible with select Jaguar XJ6, XJ12, XJ, and Vanden Plas applications

Product Details

This fuel tank sending unit lock ring is recommended whenever the sending unit is serviced, helping retain the fuel pump assembly securely at the tank lock. Dorman 579-035 is built for Jaguar fuel system repair work where a dependable retaining ring and sealing surface are needed. It fits 1972-1987 Jaguar XJ6, 1973-1979 Jaguar XJ12, 1981-1992 Jaguar XJ12, 1969-1971 Jaguar XJ, and 1986 Jaguar Vanden Plas. This part cross-references Spectra Premium LO64 for the same application.

Common Repair Uses

• Replacing a worn or damaged fuel tank sending unit lock ring
• Restoring secure retention of the fuel pump assembly at the tank opening
• Addressing fuel odor concerns caused by a poor seal at the sending unit
• Correcting service issues after fuel tank sender removal and reinstallation
• Supporting repair work on Jaguar XJ6, XJ12, XJ, and Vanden Plas fuel systems

Installation Notes

Inspect the tank flange, seal surface, and sending unit before installation. Replace the ring when the sender is serviced if the original ring shows corrosion, distortion, or loss of tension. Mounting hardware is not included. Verify the lock ring diameter and application match the vehicle before assembly.

Quality Assurance

Dorman manufactures replacement hardware for fuel system service with materials selected for dependable fit and function. Part number 579-035 is intended for direct replacement use on the listed Jaguar applications.