Mevotech GS401266 Lateral Arm and Ball Joint Assembly - Rear Upper Rearward

Rear Upper Rearward Suspension Arm Assembly

Mevotech GS401266 is a lateral arm and ball joint assembly for the rear upper rearward position on select Ford Expedition and Lincoln Navigator models. It combines a unitized ball joint with a rubber-bushed end to restore suspension geometry, ride control, and rear axle location.

Built as a premium OE replacement, this assembly is pre-greased and includes mounting hardware for a direct service replacement on the rear suspension.

Key Features

• Part number GS401266 for rear upper rearward suspension service
• Fits 2018-2024 Ford Expedition, rear upper rearward
• Fits 2018-2024 Lincoln Navigator, rear upper rearward
• Ball joint end with unitized mounting type
• Bushing end with rubber bushing material
• Pre-greased for ready-to-install service
• Bushings included
• Mounting hardware included
• Non-adjustable design with threaded stud type

Detailed Description

Mevotech GS401266 is engineered for the rear upper rearward suspension location on the Ford Expedition and Lincoln Navigator. The assembly measures 12.56 inches in length and uses a ball joint on one end and a bushing on the other to support controlled suspension movement while maintaining alignment and handling characteristics. As an OE-style replacement, it is built to restore factory ride quality and rear suspension performance on 2018-2024 Ford Expedition and 2018-2024 Lincoln Navigator applications.

This part cross-references Ford/Lincoln OE numbers JL1Z5500A and JL1Z5500D for the same application. The GS401266 part number is also listed under Mevotech Original Grade GS401266.

What It Helps Address

• Rear suspension looseness or instability
• Clunking or knocking from the rear suspension area
• Excessive movement at the rear upper rearward arm location
• Uneven rear suspension response over bumps and road joints
• Restoration of OE ride and handling characteristics

Installation Notes and Tips

Verify the rear upper rearward position before installation and confirm vehicle year, make, and model against the fitment list. Inspect adjacent bushings, fasteners, and mounting points for wear before reassembly. Because this assembly is non-adjustable, final suspension alignment and ride-height checks should be performed after installation where applicable.

Quality Assurance

Mevotech Original Grade parts are positioned as OE replacement components for restoring factory-style suspension performance. GS401266 is pre-greased and supplied with bushings and mounting hardware for service replacement on the specified Ford Expedition and Lincoln Navigator applications.