Moog RK100138 Suspension Control Arm and Ball Joint Assembly - Rear Upper Rearward

Moog Suspension Control Arm and Ball Joint Assembly Overview

The Moog RK100138 suspension control arm and ball joint assembly is engineered for precise fitment on select Lexus models including GS300, GS350, IS250, IS350, and IS F. Designed with durability and adjustability in mind, this assembly ensures reliable suspension performance and improved vehicle handling.

• Grease fitting included for easy maintenance
• Includes rubber bushings for vibration dampening
• Press-in ball joint mounting type with threaded stud
• Forged steel control arm for enhanced strength
• Adjustable design for alignment customization

Detailed Product Features and Specifications

This Moog suspension control arm and ball joint assembly (part number RK100138) features a forged steel control arm that provides robust structural integrity, essential for maintaining suspension geometry under various driving conditions. The assembly includes rubber bushings that help absorb road vibrations and reduce noise, contributing to a smoother ride. The ball joint is press-in mounted and equipped with a threaded stud, allowing for secure attachment and straightforward replacement. Additionally, the grease fitting facilitates regular lubrication, extending the lifespan of the ball joint and bushings. The adjustable nature of this control arm allows for precise alignment adjustments, which is critical for maintaining proper tire wear and vehicle stability on Lexus GS and IS series vehicles.

Compatible Lexus Models and Applications

This suspension control arm and ball joint assembly is compatible with the following Lexus models:

• Lexus GS300
• Lexus GS350
• Lexus IS250
• Lexus IS350
• Lexus IS F

It is designed to replace worn or damaged control arms and ball joints, restoring suspension performance and handling characteristics specific to these Lexus vehicles.

Common Issues Addressed by This Assembly

• Excessive suspension play causing unstable handling
• Uneven tire wear due to misalignment
• Clunking or knocking noises from worn ball joints or bushings
• Vibration and harshness transmitted through the suspension
• Difficulty maintaining proper wheel alignment

Installation Notes and Tips

Installation of the Moog RK100138 control arm and ball joint assembly requires standard suspension tools and mechanical knowledge. The grease fitting allows for post-installation lubrication, which is recommended to ensure optimal joint performance. Due to the adjustable design, alignment should be checked and corrected after installation to meet manufacturer specifications. It is advisable to inspect related suspension components during replacement to ensure overall system integrity.

Quality Assurance and Warranty Information

Moog suspension components are manufactured to meet or exceed OEM standards, using high-quality materials such as forged steel and durable rubber bushings. The inclusion of a grease fitting supports maintenance and longevity. While specific warranty details for part number RK100138 should be confirmed with the distributor, Moog typically offers limited warranties covering defects in materials and workmanship.