Mevotech CMS901123 Lateral Arm and Ball Joint Assembly - Rear Upper Forward

Mevotech CMS901123 Rear Upper Forward Arm

Mevotech CMS901123 is a lateral arm and ball joint assembly for rear upper forward suspension service on select Kia applications. It is built with a corrosion-resistant finish, comes pre-greased, and uses a press-in ball joint mounting type for direct suspension repair work.

Key Features

• Part number: CMS901123
• Lateral arm and ball joint assembly for rear suspension service
• Press-in ball joint mounting type
• Corrosion-resistant finish for added protection
• Pre-greased for ready-to-install service
• Fixed-length arm measuring 9.25 inches long and 1.65 inches wide
• Compatible with 2006-2010 Kia Optima, rear upper forward
• Compatible with 2007-2010 Kia Magentis, rear upper forward

Detailed Description

This Mevotech lateral arm and ball joint assembly is intended for rear upper forward suspension positions on the Kia Optima and Kia Magentis. The press-in ball joint design supports service replacement where the original joint is serviced separately from the arm, while the corrosion-resistant finish helps protect the component in underbody conditions. CMS901123 is a practical OE-style suspension repair part for restoring rear suspension geometry on these Kia models.

This part cross-references Dorman OE Solutions 521-018 for the same application.

What It Is Used For

• Replacing a worn rear upper forward lateral arm on a Kia Optima or Kia Magentis
• Addressing looseness or play in the rear suspension linkage
• Correcting clunking or knocking from the rear suspension area
• Restoring stable rear wheel positioning after suspension wear
• Servicing a press-in ball joint assembly without changing the vehicle application

Installation Notes and Tips

Confirm rear upper forward position before installation and verify the press-in ball joint style matches the original suspension design. Because this component is pre-greased, inspect the joint and surrounding mounting points before pressing the assembly into place. Always perform a post-installation alignment check when suspension geometry has been disturbed.

Quality Assurance

Mevotech suspension components are built for replacement service in OE-style applications. CMS901123 is finished for corrosion resistance and supplied pre-greased to support consistent service preparation.