Mevotech CMS861240 Suspension Control Arm and Ball Joint Assembly - Front Left Upper

Front Left Upper Control Arm Assembly

Mevotech CMS861240 is a suspension control arm and ball joint assembly for select Lexus GS models. Built with application-specific upgrades, this front left upper assembly is made for high-use passenger vehicles, SUVs, fleets, and working trucks that need consistent suspension performance.

• Pre-greased for immediate service
• Stamped steel control arm construction
• Press-in ball joint mounting type
• Threaded ball joint stud type
• Bushings included with natural rubber bushing material
• Corrosion-resistant black finish
• Non-adjustable design
• Control arm dimensions: 10.25 in. maximum width, 11.2 in. maximum length

Built for Lexus GS Fitment

This Mevotech Supreme Parts assembly is engineered in-house for durability and performance in demanding suspension service. It is a direct replacement for the front left upper position on 2006 Lexus GS300, 2006-2007 Lexus GS430, 2007-2011 Lexus GS350, 2007-2011 Lexus GS450h, and 2008-2011 Lexus GS460. The CMS861240 part number is also referenced in OE-style replacement searches for the same application.

This part cross-references Dorman - OE Solutions 522-201 for the same application.

Common Problems This Part Can Address

• Excessive front-end looseness or wandering
• Clunking or knocking from worn suspension joints
• Uneven tire wear caused by worn upper control arm components
• Steering instability during braking or cornering
• Corrosion-related wear on original suspension hardware

Installation Notes

Install as a front left upper control arm and ball joint assembly for the listed Lexus GS applications. Because the ball joint is press-in and the assembly is pre-greased, replacement work is streamlined, but proper suspension torque procedures should be followed at ride height to help protect the bushings. Verify vehicle year, model, and position before installation.

Quality Assurance

Mevotech Supreme Parts are engineered in-house with application-specific upgrades for durability and performance. The Supreme line also incorporates Labor Saver design elements, tools, and hardware concepts aimed at making suspension service faster and easier.