Dorman 522-879 Suspension Control Arm and Ball Joint Assembly - Front Left Lower Rearward

Overview of Dorman Suspension Control Arm and Ball Joint Assembly

The Dorman 522-879 suspension control arm and ball joint assembly is engineered for precise fitment on select BMW models. Designed with durability and performance in mind, this assembly ensures reliable suspension function for vehicles such as the BMW 320i, 328i, and 435i.

• Pre-greased for immediate use and reduced maintenance
• Includes rubber bushings for effective vibration dampening
• Aluminum control arm construction for strength and corrosion resistance
• Press-in ball joint with threaded stud for secure mounting
• Compatible with multiple BMW models including 118i, 220i, 330i, and M240i

Detailed Product Features and Specifications

This suspension control arm and ball joint assembly (part number 522-879) features a casting/forged aluminum control arm finished in black for corrosion protection. The assembly comes pre-greased, eliminating the need for initial lubrication, although it does not include a grease fitting. Rubber bushings are integrated to absorb road vibrations and improve ride quality. The ball joint is installed and ready to use, featuring a press-in mounting type and a 14 mm threaded stud for secure attachment. The control arm measures up to 288.5 mm in width and 237 mm in length, with a single mounting hole of 12.3 mm diameter. This assembly is designed for light suspension grade applications, suitable for regular driving conditions.

Compatible BMW Models and Applications

This Dorman suspension control arm and ball joint assembly is compatible with a wide range of BMW vehicles, including but not limited to:

• BMW 118i, 120i, 220i, 228i
• BMW 230i, 235i, M135i, M140i
• BMW 318i, 320i, 328d, 328i, 330e, 330i, 335i, 340i
• BMW 420i, 420i Gran Coupe, 428i, 428i Gran Coupe
• BMW 430i, 430i Gran Coupe, 435i, 435i Gran Coupe, 440i, 440i Gran Coupe
• BMW ActiveHybrid 3, M235i, M240i

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing poor handling
• Ball joint wear leading to steering looseness or noise
• Corrosion or fatigue in original aluminum control arms
• Vibration and uneven tire wear due to suspension misalignment
• Failed suspension components affecting vehicle stability

Installation Notes and Tips

When installing the Dorman 522-879 control arm and ball joint assembly, ensure the vehicle is securely lifted and supported. Since the ball joint is pre-installed and pre-greased, no additional lubrication is required during installation. Verify torque specifications for the mounting hardware and ball joint stud according to BMW factory guidelines. Alignment should be checked and adjusted after installation to maintain proper suspension geometry.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 522-879 assembly undergoes rigorous quality control to ensure durability and performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Consult product documentation for exact warranty terms.