Dorman 520-733 Suspension Control Arm and Ball Joint Assembly - Front Left Lower Forward

Durable Suspension Control Arm and Ball Joint Assembly for BMW

The Dorman 520-733 suspension control arm and ball joint assembly is engineered to restore precise handling and suspension performance for select BMW models. Designed with quality materials and pre-installed components, this assembly offers a reliable replacement solution for your vehicle's suspension system.

• Pre-greased ball joint for immediate use
• Includes rubber bushings and mounting hardware
• Iron control arm with casting/forged construction
• Press-in ball joint with threaded stud (14 mm thread diameter)
• Compatible with multiple BMW models including 5 Series, 6 Series, 7 Series, and M variants

Product Features and Specifications

This suspension control arm and ball joint assembly from Dorman is designed specifically for light suspension grade applications. The control arm is constructed from durable iron using casting and forging methods, ensuring strength and longevity. It comes pre-greased, eliminating the need for additional lubrication during installation. Rubber bushings are included to provide effective vibration dampening and noise reduction. The ball joint is press-in mounted and features a threaded stud with a 14 mm diameter for secure attachment. The assembly includes one mounting hole with a diameter of 12.3 mm and comes with all necessary mounting hardware for a complete installation.

Compatible BMW Models

This Dorman 520-733 control arm and ball joint assembly is compatible with a range of BMW vehicles, including the 524td, 525i, 525iT, 528e, 530i, 533i, 535i, 535is, 540i, 635CSi, 735i, 735iL, 740i, 740iL, 750iL, M5, and M6 models. Ensure proper fitment by verifying your vehicle's model and year before purchase.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing poor handling
• Loose or failing ball joints leading to steering instability
• Excessive suspension noise or vibration
• Uneven tire wear due to suspension misalignment
• Reduced ride comfort and vehicle control

Installation Notes and Tips

Installation of the Dorman 520-733 assembly requires basic suspension repair tools and mechanical knowledge. Since the ball joint is pre-installed and pre-greased, no additional lubrication is necessary. Ensure all mounting hardware is securely tightened to manufacturer torque specifications. It is recommended to have a professional alignment performed after installation to maintain proper suspension geometry and tire wear.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 520-733 control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and performance. This product includes a limited warranty against defects in materials and workmanship, providing confidence in your replacement part.