Dorman Fuel Tank Lock Ring Durable Metal Design

Description

Product Overview

The Dorman 579-003 fuel tank sending unit lock ring is a precision‑engineered component designed to restore the critical link between the fuel pump, module and the fuel tank. Constructed from high‑grade metal, the ring offers superior durability and corrosion resistance, matching the original equipment specifications for a seamless fit. Dimensions measure 7.1 x 6.3 x 1 inches and the unit weighs only 0.01 ounces, making it lightweight yet robust. It arrives ready to paint if needed, allowing customization to match your vehicle’s interior.

Usage

This lock ring is intended for use in a wide range of passenger cars and light trucks where the factory lock ring has failed or become damaged. Ideal for both DIY enthusiasts and professional technicians, it can be installed during routine fuel system maintenance, pump replacement, or when addressing fuel leaks. The component is compatible with OEM part numbers LO03 and C0AZ 9A307‑B, ensuring a direct fit without the need for modifications.

Why Choose Us

Dorman brings over a century of automotive expertise to every product, and this lock ring is no exception. Each unit is manufactured to strict tolerances in the United States, guaranteeing consistent quality and performance. Backed by a team of product experts, the lock ring offers a reliable solution that meets or exceeds OEM standards, giving you confidence in long‑term durability and safety.

Key Features

• Direct OEM replacement – matches original specifications for a perfect fit
• Durable metal construction – resists corrosion and wear in harsh fuel environments
• Lightweight design – easy handling and installation
• Ready to paint – customizable finish to match vehicle interior
• Backed by Dorman’s extensive automotive experience and U.S. manufacturing

FAQ

Is this lock ring compatible with my vehicle?

Check the fit using the vehicle lookup tool on the product page. It matches OEM part numbers LO03 and C0AZ 9A307‑B, covering many makes and models.

Do I need special tools to install the lock ring?

Installation typically requires basic hand tools such as a socket set and torque wrench. No specialized equipment is necessary.

Can the lock ring be painted?

Yes, the ring is supplied ready to paint, allowing you to match the color of your vehicle’s interior or fuel tank if desired.

What warranty does Dorman provide?

Dorman offers a limited warranty that covers defects in material and workmanship, reflecting confidence in product quality.

How does this lock ring improve fuel system reliability?

By securely locking the sending unit to the tank, it prevents fuel leaks and ensures consistent pressure, contributing to overall fuel system performance.