Dorman 520-780 Suspension Control Arm - Rear Lower Forward

Overview of Dorman Suspension Control Arm 520-780

The Dorman 520-780 suspension control arm is engineered for reliable performance in select Chrysler and Mercedes-Benz vehicles. Designed with durable steel construction and a coated black finish, this control arm offers a solid replacement option for models like the Mercedes-Benz 300E and Chrysler Crossfire.

• Constructed from high-strength steel with casting and forging methods
• Includes a rubber bushing with black color and precise dimensions (14.3 mm inside diameter, 39.6 mm outside diameter)
• Overall length of 262.5 mm for accurate fitment
• Coated finish to resist corrosion and wear
• Welded ball joint mounting type with threaded stud (ball joint not included)
• Press-in end type with bushing linkage end
• Includes one suspension control arm with bushing installed

Detailed Product Description

This Dorman suspension control arm (part number 520-780) is designed to restore proper suspension geometry and handling characteristics in compatible Chrysler and Mercedes-Benz vehicles. The steel construction combines casting and forging techniques to provide strength and durability under normal driving conditions. The black coated finish helps protect against rust and environmental damage.

The control arm features a rubber bushing that cushions suspension movement and reduces noise and vibration. The bushing’s dimensions (14.3 mm inside diameter, 39.6 mm outside diameter, and 92 mm length) ensure a precise fit for the specified applications. The welded ball joint mounting type with a threaded stud allows for secure attachment of the ball joint, although the ball joint itself is not included with this part.

Compatible Vehicles and Applications

This suspension control arm is compatible with a range of Chrysler and Mercedes-Benz models, including but not limited to the Mercedes-Benz 190E, 300E, 500SL, C43 AMG, CLK55 AMG, and the Chrysler Crossfire. It is designed to meet the suspension requirements of these vehicles, ensuring proper alignment and handling performance.

Common Issues Addressed by This Control Arm

• Worn or damaged control arm bushings causing suspension noise or looseness
• Corroded or bent control arms affecting wheel alignment and tire wear
• Reduced handling stability due to compromised suspension components
• Vibration or harshness transmitted through the suspension system
• Failed ball joint mounting points requiring a solid replacement arm

Installation Notes and Tips

Installation of the Dorman 520-780 suspension control arm requires basic suspension knowledge and tools. Since the ball joint is not included, ensure the existing ball joint is inspected and replaced if necessary. Proper torque specifications should be followed when securing mounting bolts. It is recommended to have a professional alignment performed after installation to maintain optimal handling and tire wear.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 520-780 control arm undergoes quality checks to ensure durability and performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship.