Dorman 520-040 Lateral Arm - Rear Lower Forward

Durable Lateral Arm for Ford Fusion, Lincoln MKZ, and Mercury Milan

The Dorman 520-040 lateral arm is engineered to provide reliable suspension support for select Ford, Lincoln, and Mercury vehicles. Designed with steel construction and rubber bushings, this lateral arm ensures consistent performance and durability for your Fusion, MKZ, or Milan.

• Constructed from sturdy steel for long-lasting strength
• Black rubber and steel bushings included for effective vibration dampening
• Adjustable tubular control arm design for precise suspension alignment
• Compatible with Ford Fusion, Lincoln MKZ, and Mercury Milan models
• End types include bushing and mounting hole for secure bolt-on attachment
• Standard replacement grade for dependable suspension repair
• Length of 173 mm with a 12.4 mm mounting hole diameter

Product Details and Specifications

The Dorman 520-040 lateral arm features a tubular steel construction finished in black to resist corrosion and wear. It includes black rubber bushings reinforced with steel to absorb road shocks and reduce noise. The arm measures 173 mm in length and has a mounting hole diameter of 12.4 mm, designed for bolt-on installation without the need for additional mounting hardware. This lateral arm is adjustable, allowing for fine-tuning of suspension geometry to maintain proper wheel alignment. It is not greaseable and does not include a ball joint or grease fittings.

Compatible Vehicles and Applications

This lateral arm is specifically compatible with the following vehicles:

• Ford Fusion
• Lincoln MKZ
• Mercury Milan

It is intended for use in suspension systems requiring a lateral arm replacement to restore handling stability and ride comfort.

Common Suspension Issues Addressed

• Worn or damaged lateral arm causing poor vehicle handling
• Excessive suspension noise due to deteriorated bushings
• Misalignment issues affecting tire wear and steering response
• Vibration and instability during cornering or braking
• Corrosion or structural fatigue in original lateral arm components

Installation Notes and Tips

Installation of the Dorman 520-040 lateral arm requires basic suspension knowledge and appropriate tools. Since mounting hardware is not included, reuse existing bolts or acquire compatible fasteners. Ensure the vehicle is safely supported and suspension components are properly aligned during installation. Adjust the arm as needed to achieve correct suspension geometry and wheel alignment. Professional alignment after installation is recommended to optimize handling and tire life.

Quality Assurance and Warranty

Dorman lateral arms meet standard replacement grade specifications to provide reliable performance and durability. The product is manufactured with quality steel and rubber materials to withstand typical driving conditions. While specific warranty details are not provided, Dorman products generally come with limited warranties covering defects in materials and workmanship.