Dorman 522-840 Suspension Control Arm - Rear Left Upper or Rear Right Upper

Durable Suspension Control Arm for Mazda 6

The Dorman 522-840 suspension control arm is engineered to provide reliable performance for Mazda 6 vehicles. Constructed from steel with a coated black finish, this control arm offers strength and corrosion resistance to maintain suspension integrity.

• Material: Heavy-duty steel construction
• Finish: Protective black coating for durability
• Bushing: Includes one rubber bushing with 14.3 mm inside diameter
• Length: 262.5 mm overall length for precise fitment
• Ball Joint: Welded mounting type with threaded stud (ball joint not included)
• Construction: Casting and forging for enhanced strength
• Mounting: Press-in end type with bushing linkage

Technical Details and Construction

This suspension control arm features a combination of casting and forging processes to ensure structural integrity under typical driving stresses. The included rubber bushing, finished in black, helps absorb vibrations and reduce noise, contributing to a smoother ride. The welded ball joint mounting provides a secure connection point, although the ball joint itself is not included with this part. Designed specifically for the Mazda 6, the 522-840 control arm matches OEM specifications for length and mounting style.

Compatible Vehicles and Applications

This Dorman suspension control arm is compatible with Mazda 6 models requiring a 262.5 mm length control arm with a press-in bushing end. It is intended for use in suspension systems where the ball joint is serviced separately. Common issues addressed by replacing this control arm include:

• Excessive suspension noise or clunking
• Uneven tire wear due to misalignment
• Loose or unstable steering feel
• Worn or damaged bushings causing vibration
• Corrosion or structural damage to the original control arm

Installation Notes and Tips

Installation of the Dorman 522-840 control arm requires removal of the old control arm and transfer or replacement of the ball joint if necessary. Since mounting hardware and ball joint are not included, ensure you have the correct components before beginning installation. Proper torque specifications should be followed to maintain suspension geometry and safety. It is recommended to have a professional alignment performed after installation.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards. The 522-840 control arm undergoes rigorous quality checks to ensure durability and fitment accuracy. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Refer to Dorman’s official documentation for exact warranty terms.