Dorman 521-985 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 521-985 suspension control arm and ball joint assembly is engineered for reliable performance in Dodge Ram 2500 and Ram 3500 trucks. Designed with a boxed steel control arm and pre-greased ball joint, this assembly supports light suspension grade applications with integrated rubber bushings for enhanced durability.

• Pre-greased ball joint for immediate use
• Boxed steel control arm construction in black finish
• Includes rubber bushings for vibration dampening
• Bolt-in ball joint with threaded stud (14 mm thread diameter)
• Mounting hardware included for straightforward installation
• Control arm dimensions: maximum length 237 mm, maximum width 288.5 mm
• Single mounting hole with 12.3 mm diameter

Product Features and Specifications

This suspension control arm and ball joint assembly (part number 521-985) is designed specifically for Dodge Ram 2500 and Ram 3500 models. The control arm is constructed from durable boxed steel, providing structural integrity and resistance to wear. The assembly comes pre-greased, eliminating the need for immediate maintenance after installation. Rubber bushings are included to reduce noise and absorb road vibrations, contributing to a smoother ride. The ball joint is bolt-in type with a threaded stud, ensuring secure attachment and compatibility with factory mounting points. The black finish on the control arm offers corrosion resistance and a clean appearance.

Common Applications and Problem Resolution

• Replacement for worn or damaged suspension control arms on Dodge Ram 2500 and Ram 3500
• Addresses issues with loose or noisy ball joints affecting steering stability
• Restores proper suspension geometry and alignment
• Improves ride quality by reducing vibration through rubber bushings
• Prevents premature wear caused by failed bushings or ball joints

Installation Notes and Tips

Installation of the Dorman 521-985 control arm and ball joint assembly requires basic suspension tools and mechanical knowledge. The bolt-in ball joint design allows for direct replacement without the need for press tools. Ensure all mounting surfaces are clean and free of debris before installation. Torque all fasteners to manufacturer specifications to maintain suspension integrity. Since the assembly is pre-greased, no additional lubrication is necessary during installation.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit and function. The 521-985 control arm and ball joint assembly undergoes rigorous quality control to ensure durability and performance. While specific warranty details are not provided here, Dorman typically offers limited warranties covering defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.