Dorman 520-399
Dorman 520-399 Front Driver Side Lower Suspension Control Arm and Ball Joint Assembly
Model: 520-399 | Brand: Dorman
Product Overview
The Dorman 520-399 Suspension Control Arm and Ball Joint Assembly is engineered as a direct replacement for the original equipment on specific vehicle applications. This assembly undergoes an industry-leading evaluation process to ensure a smooth ride, directional stability, and predictable dynamics, contributing to overall vehicle safety and performance.

Figure 1: Front view of the Dorman 520-399 Suspension Control Arm and Ball Joint Assembly.
Key Features:
- Trustworthy Replacement: Directly replaces the original assembly on specific vehicle applications.
- Complete Repair: Each assembly includes pre-installed ball joint and bushings, saving time and labor.
- Quality Engineering: Underwent industry-leading testing to ensure a smooth, stable, and safe ride.
- Durably Designed: Additional coatings offer long-lasting rust and corrosion resistance.
- Ensure Fit: Compatible with specific Hyundai and Kia models. Verify fitment using your vehicle's make, model, and trim level.
What's in the Box
- 1 x Dorman 520-399 Front Driver Side Lower Suspension Control Arm and Ball Joint Assembly
Vehicle Compatibility
This part is compatible with the following vehicles. Please confirm fitment for your specific vehicle trim before installation.
- Hyundai Tucson: 2010, 2011, 2012, 2013
- Kia Sportage: 2011, 2012, 2013
Installation Guidance
Installation of suspension components should be performed by a qualified technician using appropriate tools and safety procedures. Refer to your vehicle's service manual for detailed, model-specific instructions and torque specifications.

Figure 2: Underside view of the Dorman 520-399 Control Arm, highlighting pre-installed components.
Official Product Videos:
Video 1: Dorman Chassis and Suspension Parts | Durable Replacements and Upgrades. This video provides an overview of Dorman's commitment to quality and durability in their chassis and suspension components.
Video 2: See the Dorman Control Arm and Chassis Quality Difference. This video details the rigorous testing and engineering processes Dorman employs to ensure the safety and reliability of their control arms and chassis parts.
Maintenance
Regular inspection of your vehicle's suspension components is crucial for safety and longevity. Check for signs of wear, damage, or corrosion on the control arm, ball joint, and bushings during routine vehicle maintenance. Address any issues promptly to maintain vehicle performance and safety.
Specifications
| Attribute | Value |
|---|---|
| Brand | Dorman |
| Model | 520-399 |
| Auto Part Position | Front |
| Orientation | Driver's Side |
| Material | Alloy Steel |
| Item Weight | 10.98 pounds |
| Product Dimensions | 11 x 5 x 3.15 inches |
| Fit Type | Vehicle Specific Fit |
| Color | Multi |
Safety Information
⚠️ WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Support & Warranty
For additional support, technical assistance, or warranty information, please visit the official Dorman Products store or contact their customer service directly.
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