Dorman 521-990 Suspension Control Arm and Ball Joint Assembly - Front Right Upper

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 521-990 suspension control arm and ball joint assembly is engineered to restore precise steering and suspension performance. Designed with a robust iron control arm and pre-installed ball joint, this assembly suits light suspension grade applications requiring reliable durability.

• Pre-greased for immediate use and reduced maintenance
• Includes rubber bushings for vibration dampening and noise reduction
• Press-in ball joint with threaded stud for secure mounting
• Constructed from forged/cast iron for strength and longevity
• Comes with mounting hardware for straightforward installation
• Control arm dimensions: maximum length 237 mm, maximum width 288.5 mm
• Black finish for corrosion resistance and aesthetic consistency

Product Details and Specifications

This Dorman suspension control arm and ball joint assembly (part number 521-990) features a light suspension grade type suitable for regular driving conditions. The control arm is made from durable iron with a forged/casting manufacturing process, ensuring structural integrity. Rubber bushings are included to absorb road shocks and reduce noise, enhancing ride comfort. The ball joint is pre-installed and press-fitted, with a threaded stud measuring 14 mm in diameter, providing a secure connection to the vehicle’s suspension system. The assembly includes one mounting hole with a diameter of 12.3 mm, and mounting hardware is supplied to facilitate installation. The black coating helps protect against corrosion and wear.

Compatible Vehicles and Applications

This control arm and ball joint assembly is compatible with various light-duty vehicles requiring a suspension grade light control arm. It is commonly used in models where a 237 mm length and 288.5 mm width control arm with a 14 mm threaded ball joint stud is specified. For exact fitment, verify vehicle make and model specifications against part number 521-990.

• Restores proper suspension geometry and alignment
• Eliminates clunking or knocking noises from worn ball joints
• Improves steering response and handling stability
• Reduces uneven tire wear caused by faulty control arms
• Addresses vibration and harshness from deteriorated bushings

Installation Notes and Tips

Before installation, ensure the vehicle is securely lifted and supported. Remove the old control arm assembly carefully, noting the orientation and mounting points. Since the ball joint is pre-installed and press-fitted, no additional ball joint installation tools are required. Use the included mounting hardware to secure the assembly, and torque all fasteners to manufacturer specifications. After installation, a professional wheel alignment is recommended to maintain proper suspension geometry and tire wear.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 521-990 suspension 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 material and workmanship. Consult product documentation or Dorman directly for warranty terms.