Dorman 520-371 Lateral Arm - Rear Lower Forward

Overview of Dorman 520-371 Lateral Arm for Mercedes-Benz

The Dorman 520-371 lateral arm is a reliable suspension component designed specifically for select Mercedes-Benz models including the B180, B250, CLA180, and GLA250. Constructed from durable steel with black rubber bushings, this lateral arm ensures stable handling and precise suspension alignment.

• Made from high-strength steel for durability
• Black rubber bushings included for vibration dampening
• Stamped control arm design for structural integrity
• Compatible with Mercedes-Benz B180, B250, CLA180, CLA200, CLA250, GLA180, GLA200, and GLA250 models
• Part number 520-371 for accurate identification
• Bolt-on attachment type with two mounting holes (12.2 mm diameter)
• Length of 255 mm and height of 50 mm for precise fitment

Detailed Product Description

The Dorman 520-371 lateral arm is engineered as a standard replacement part to restore proper suspension geometry on compatible Mercedes-Benz vehicles. Featuring a stamped steel construction, this lateral arm offers a balance of strength and weight savings. The black rubber bushings at one end provide effective noise and vibration isolation, while the bracket end allows secure mounting. With a stud thread diameter of 12 mm and two mounting holes sized at 12.2 mm, installation aligns with factory specifications. This lateral arm is not adjustable and does not include ball joints or mounting hardware, focusing on a straightforward bolt-on replacement.

Common Applications and Problem Resolution

• Corrects suspension misalignment causing uneven tire wear
• Replaces worn or damaged lateral arms that affect vehicle handling
• Eliminates clunking noises from suspension movement
• Restores proper toe compensation for improved steering response
• Addresses vibration issues related to deteriorated bushings

Installation Notes and Tips

Installation of the Dorman 520-371 lateral arm requires basic suspension knowledge and tools. Since mounting hardware is not included, reuse existing bolts or acquire OEM-grade fasteners. Ensure the vehicle is securely lifted and supported before removal. Align the lateral arm carefully to avoid stress on bushings and suspension components. After installation, a professional wheel alignment is recommended to maintain optimal handling and tire wear.

Quality Assurance and Warranty

Dorman provides this lateral arm as a standard replacement part meeting OEM fit and function standards. The steel construction and rubber bushings are designed for durability under normal driving conditions. While mounting hardware and grease fittings are not included, the part is manufactured to precise specifications to ensure reliable performance. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.