Moog RK621351 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Moog Suspension Control Arm and Ball Joint Assembly Overview

The Moog RK621351 suspension control arm and ball joint assembly is designed for reliable performance on select Buick, Chevrolet, Pontiac, and Saturn vehicles. This pre-greased, stamped steel control arm assembly is engineered to restore proper suspension function and improve vehicle handling for models like the Aztek, Montana, Relay, Rendezvous, Terraza, and Uplander.

• Pre-greased for immediate installation and reduced maintenance
• Includes rubber bushings and mounting hardware for a complete replacement
• Stamped steel control arm with a black finish for durability
• Bolt-in ball joint with threaded stud for secure fitment
• Compatible with Buick Aztek, Chevrolet Montana, Relay, Pontiac Rendezvous, Saturn Terraza, and Uplander

Detailed Product Features and Specifications

The Moog RK621351 control arm assembly features a stamped steel construction that provides strength and resistance to wear. The included rubber bushings help absorb road vibrations and reduce noise, contributing to a smoother ride. This assembly comes pre-greased, eliminating the need for additional lubrication during installation. The ball joint is mounted using a bolt-in design with a threaded stud, ensuring a secure and precise fit. The control arm measures up to 13.930 inches in length and is finished in black to resist corrosion.

Compatible Vehicles and Applications

This suspension control arm and ball joint assembly is compatible with a range of GM vehicles, including:

• Buick Aztek
• Chevrolet Montana and Relay
• Pontiac Rendezvous
• Saturn Terraza and Uplander

Use the Moog RK621351 to maintain or restore suspension performance on these specific models.

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 misaligned suspension components
• Difficulty maintaining proper wheel alignment

Installation Notes and Tips

The Moog RK621351 comes with all necessary mounting hardware for a straightforward installation. Since the control arm is pre-greased, no additional lubrication is required before assembly. Ensure the vehicle is properly supported and aligned after installation to maintain suspension geometry. The bolt-in ball joint with threaded stud simplifies replacement without the need for special tools.

Quality Assurance and Warranty

Moog suspension components are manufactured to meet or exceed OEM standards for durability and performance. The RK621351 control arm assembly is backed by Moog's limited warranty, providing coverage against defects in materials and workmanship. This ensures confidence in the product's reliability for your Buick, Chevrolet, Pontiac, or Saturn vehicle.