Moog RK621316 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Reliable Suspension Control Arm for Chevrolet, GMC, Isuzu, and Saab

The Moog RK621316 Suspension Control Arm and Ball Joint Assembly is engineered to restore precise steering and suspension performance for select Chevrolet, GMC, Isuzu, and Saab models. Designed with durability and fitment in mind, this pre-greased control arm assembly offers a direct replacement solution for vehicles like the Chevrolet Trailblazer, GMC Envoy, Isuzu Ascender, and Saab 9-7x.

Key Features of Moog RK621316 Control Arm Assembly

• Pre-greased for immediate installation and reduced maintenance
• Includes rubber bushings and mounting hardware for a complete replacement
• Stamped steel control arm construction in black finish for strength and corrosion resistance
• Press-in ball joint with threaded stud type for secure fitment
• Control arm maximum length of 15.290 inches ensures proper suspension geometry
• Compatible with Chevrolet Trailblazer, GMC Envoy, Isuzu Ascender, and Saab 9-7x models

Detailed Description of the RK621316 Suspension Control Arm

This Moog suspension control arm and ball joint assembly (part number RK621316) is designed to meet or exceed OEM specifications for the Chevrolet Trailblazer, GMC Envoy, Isuzu Ascender, and Saab 9-7x. The stamped steel control arm provides a durable and rigid structure, while the included rubber bushings help absorb road vibrations and reduce noise. The ball joint is press-in mounted with a threaded stud, ensuring a secure and reliable connection to the vehicle’s suspension system. Pre-greased components allow for immediate use without additional lubrication, and the included mounting hardware simplifies installation.

Common Applications and Issues Addressed

• Restores proper suspension alignment and handling characteristics
• Eliminates clunking or knocking noises from worn control arm bushings or ball joints
• Corrects uneven tire wear caused by suspension component wear
• Improves steering response and vehicle stability
• Replaces damaged or corroded control arms to maintain safety

Installation Notes and Tips

• Pre-greased ball joint and bushings reduce installation time and initial maintenance
• Verify compatibility with Chevrolet Trailblazer, GMC Envoy, Isuzu Ascender, or Saab 9-7x before installation
• Use included mounting hardware to ensure proper fit and torque specifications
• Inspect related suspension components during installation for wear or damage
• Professional alignment is recommended after installation to maintain suspension geometry

Quality Assurance and Warranty

Moog suspension components are manufactured to meet strict quality standards, ensuring reliable performance and durability. The RK621316 control arm assembly is backed by Moog’s limited warranty against defects in materials and workmanship. This warranty provides added confidence in the product’s longevity and fitment for Chevrolet, GMC, Isuzu, and Saab vehicles.