Moog RK621537 Suspension Control Arm and Ball Joint Assembly - Front Left Upper

Front Left Upper Control Arm for Chrysler and Dodge

The Moog RK621537 is a front left upper suspension control arm and ball joint assembly built for select Chrysler and Dodge applications. It uses a forged steel arm, rubber bushings, and a pre-greased design to support consistent suspension movement and OE-style serviceability.

Compatible with 2005-2023 Chrysler 300, 2005-2008 Dodge Magnum, 2007-2019 Dodge Charger, and 2017-2019 Dodge Challenger front left upper positions, this Moog control arm is built for direct replacement service on the listed vehicles.

Key Features

• Forged steel control arm for structural strength
• Pre-greased for initial service readiness
• Rubber bushings included for suspension isolation
• Press-in ball joint mounting type
• Threaded ball joint stud type
• Mounting hardware included
• Black corrosion-resistant finish
• Non-adjustable design for OE-style fitment

Detailed Description

Moog RK621537 is engineered as a suspension control arm and ball joint assembly for the front left upper position. The forged steel construction provides a rigid foundation, while the rubber bushings help maintain controlled suspension articulation. The press-in ball joint design and threaded stud configuration support a service-focused replacement on the specified Chrysler 300, Dodge Charger, Dodge Challenger, and Dodge Magnum applications. This part cross-references Dorman OE Solutions 521-703 for the same application.

What This Part Helps Address

• Excessive front-end looseness or wandering
• Clunking or knocking from worn upper control arm components
• Uneven tire wear caused by suspension wear
• Steering response issues related to worn bushings or ball joint wear
• Suspension noise during braking, turning, or road impacts

Installation Notes and Tips

Verify the front left upper position and confirm vehicle year, make, and model before installation. Because the ball joint is press-in, proper suspension service tools are required for installation and removal. After replacement, a professional wheel alignment is recommended to restore suspension geometry on the Chrysler 300, Dodge Charger, Dodge Challenger, or Dodge Magnum.

Quality Assurance

Moog premium control arms for foreign and domestic nameplates are engineered for structural strength and corrosion protection. RK621537 is built to meet OE standards for the listed applications and is designed for dependable suspension service.