Moog RK620129 Suspension Control Arm and Ball Joint Assembly - Front Left Lower Rearward

Overview of Moog RK620129 Suspension Control Arm

The Moog RK620129 suspension control arm and ball joint assembly is engineered for precise fitment on select BMW models including the 128i, 135i, 323i, 325i, 328i, 330i, 335d, 335i, 335is, and X1. Designed to restore suspension performance, this assembly comes pre-greased and includes rubber bushings for improved ride quality and durability.

• Pre-greased ball joint for immediate use
• Includes rubber bushings for vibration dampening
• Forged aluminum control arm for strength and reduced weight
• Press-in ball joint mounting with threaded stud type
• Gray finish control arm with a maximum length of 11.33 inches
• Mounting hardware included for straightforward installation

Product Features and Specifications

The RK620129 control arm assembly features a forged aluminum control arm that balances durability with lightweight construction, helping maintain suspension geometry and vehicle handling. The ball joint is press-in mounted with a threaded stud, ensuring secure attachment and compatibility with factory components. Rubber bushings are included to absorb road vibrations and reduce noise, contributing to a smoother driving experience. This assembly is pre-greased, eliminating the need for immediate maintenance after installation. The control arm’s gray color and 11.33-inch maximum length are designed to match OEM specifications for the listed BMW models.

Compatible BMW Models and Applications

This suspension control arm and ball joint assembly is compatible with a range of BMW vehicles, including the 128i, 135i, 323i, 325i, 328i, 330i, 335d, 335i, 335is, and X1. The part number RK620129 ensures precise fitment and reliable performance for these models, making it a suitable replacement for worn or damaged suspension components.

• Restores proper suspension alignment and handling
• Replaces worn or damaged control arms and ball joints
• Reduces suspension noise and vibration
• Improves vehicle stability and steering response
• Prevents premature tire wear caused by suspension issues

Installation Notes and Tips

Installation of the Moog RK620129 control arm assembly requires basic suspension knowledge and appropriate tools. Since the ball joint is press-in mounted with a threaded stud, ensure proper torque specifications are followed during installation. The assembly comes pre-greased, so additional lubrication is not necessary at the time of installation. Verify compatibility with your specific BMW model before beginning the replacement process.

Quality Assurance and Warranty

Moog suspension components are manufactured to meet or exceed OEM standards. The RK620129 control arm assembly undergoes rigorous testing to ensure durability and performance. While specific warranty details are not provided here, Moog typically offers limited warranties on their suspension parts to cover defects in materials and workmanship.