Dorman 521-437 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 521-437 suspension control arm and ball joint assembly is engineered for reliable performance on Dodge and Mercedes-Benz Sprinter models. Designed to meet regular suspension grade requirements, this assembly ensures proper vehicle handling and stability.

• Pre-greased for immediate installation and smooth operation
• Includes rubber bushings and mounting hardware for a complete replacement
• Steel control arm with casting/forged construction for strength and durability
• Press-in ball joint with threaded stud, installed and ready to use
• Compatible with Dodge Sprinter, Sprinter 2500, and Sprinter 3500 models

Product Features and Specifications

This suspension control arm and ball joint assembly (part number 521-437) features a black steel control arm measuring up to 288.5 mm in width and 237 mm in length. The assembly includes a single mounting hole with a diameter of 12.3 mm, designed for straightforward installation. The ball joint is press-in mounted with a 14 mm threaded stud, ensuring secure attachment and reliable steering response. Rubber bushings are included to reduce vibration and noise, contributing to a smoother ride. The assembly is pre-greased, eliminating the need for additional lubrication during installation.

Compatible Vehicles and Applications

This Dorman suspension control arm and ball joint assembly is compatible with the following vehicles:

• Dodge Sprinter
• Mercedes-Benz Sprinter 2500
• Mercedes-Benz Sprinter 3500

It is designed for light suspension grade use, making it suitable for regular driving conditions and load requirements typical of these models.

Common Issues Addressed by This Assembly

• Worn or damaged control arm bushings causing steering instability
• Ball joint wear leading to uneven tire wear or clunking noises
• Corroded or bent control arms affecting vehicle alignment
• Loose or faulty ball joint studs compromising suspension safety
• Vibration and noise from deteriorated suspension components

Installation Notes and Tips

Before installation, verify vehicle compatibility with the Dorman 521-437 part number. The assembly comes pre-greased and includes mounting hardware, simplifying the replacement process. Use appropriate tools to press out the old ball joint if necessary, and ensure all mounting bolts are torqued to manufacturer specifications. Since the control arm is not adjustable, alignment should be checked and corrected after installation.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit and function. This control arm and ball joint assembly undergoes quality inspections to ensure durability and performance. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in materials and workmanship.