Dorman 579-028 Fuel Tank Sending Unit Lock Ring

Fuel Tank Sending Unit Lock Ring for Classic Chevy

Dorman 579-028 is a fuel tank sending unit lock ring made to retain the fuel pump assembly at the tank opening during service. Built from durable rubber and supplied with a seal, it supports a secure, service-ready connection for classic fuel system repairs.

Key Features

• Fuel tank sending unit lock ring for retaining the pump/sending unit assembly
• Durable rubber construction for reliable service
• Includes gasket or seal for the tank opening
• Inside diameter: 1.625 in.; outside diameter: 2 in.
• Direct replacement style for service on classic Chevrolet fuel systems

Product Details

This Dorman 579-028 lock ring is recommended whenever the sending unit is serviced, helping secure the fuel pump assembly to the tank lock area. It is a practical replacement for 1955-1957 Chevrolet Bel Air applications and is suited to restoration work or fuel system maintenance where a proper retaining ring and seal are needed. This part cross-references Spectra Premium LO28 for the same application.

Common Repair Uses

• Loose or worn fuel tank sending unit retention
• Fuel odor from a compromised tank opening seal
• Service work on the fuel pump or sending unit assembly
• Restoration of original-style fuel tank hardware on a Chevrolet Bel Air

Installation Notes

Inspect the tank opening, sending unit flange, and sealing surface before installation. Replace any damaged sealing components, align the assembly carefully, and tighten the lock ring evenly so the unit seats fully. Verify that the seal is positioned correctly and that the assembly is secure after service.

Quality Assurance

Dorman manufactures replacement hardware for automotive repair applications, and this lock ring is built from durable materials for dependable service during fuel tank maintenance.