Mevotech GS401211 Lateral Arm - Rear Left Upper

Rear Left Upper Lateral Arm for Mustang

Mevotech GS401211 is a steel rear left upper lateral arm for the 2015-2025 Ford Mustang. It uses rubber bushings and a fixed, non-adjustable design to help restore OE-style rear suspension geometry, handling response, and ride quality.

Key Features

• Steel construction for strength and durability
• Black finish
• Rubber bushings included
• Non-adjustable lateral arm design
• Ball joint not included
• Direct-fit rear left upper suspension application

Detailed Description

This Mevotech lateral arm, part number GS401211, is built for the rear left upper position on Ford Mustang models from 2015 through 2025. It is engineered as a premium OE replacement to restore factory suspension performance, helping maintain proper alignment and stable rear-end control. The steel arm and rubber bushings are selected for everyday road use and consistent suspension articulation. If you are replacing a worn rear left upper lateral arm on a Ford Mustang, GS401211 provides the correct fitment for this application.

This part cross-references MOOG Chassis Products RK643304 for the same application.

What It Helps Address

• Rear suspension looseness or clunking from worn bushings
• Uneven rear tire wear caused by suspension wear
• Reduced handling stability in the rear suspension
• Excess movement at the rear left upper control point
• Restoring OE ride feel after suspension service

Installation Notes and Tips

Fits 2015-2025 Ford Mustang, rear left upper. Verify the position before installation and inspect adjacent suspension components for wear. Because this arm is non-adjustable, final alignment should be checked after installation to confirm rear suspension geometry is within specification.

Quality Assurance

Mevotech Original Grade parts are built for OE-style replacement applications, with materials and construction selected to match the demands of the original suspension design. GS401211 is a direct replacement lateral arm for the specified Mustang rear left upper position.