Moog RK621966 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Front Left Lower Control Arm for Sprinter

Moog RK621966 is a front left lower suspension control arm and ball joint assembly for select Mercedes-Benz Sprinter and Dodge Sprinter applications. It is built with stamped steel construction, rubber bushings, and a press-in ball joint to support steering and suspension service on the front left lower position.

Key Features

• Stamped steel control arm for structural strength
• Rubber bushings included for suspension isolation
• Press-in ball joint mounting type
• Threaded ball joint stud type
• No grease fitting included
• Non-adjustable design
• Control arm maximum length: 18.543
• Moog RK621966 for front left lower suspension service

Detailed Description

This Moog suspension control arm and ball joint assembly is engineered for foreign and domestic nameplates with an emphasis on structural strength and corrosion protection. For Mercedes-Benz Sprinter 2500, Sprinter 3500, Sprinter 3500XD, and Sprinter 1500 models, as well as Dodge Sprinter 2500 and Sprinter 3500 applications, RK621966 provides a direct replacement for the front left lower position. This part cross-references Dorman OE Solutions 521-625 for the same application.

Use RK621966 when replacing a worn front left lower control arm on a Mercedes-Benz Sprinter 2500 or Mercedes-Benz Sprinter 3500, or when servicing Dodge Sprinter front suspension components. The stamped steel arm and rubber bushings are selected to match OE-style suspension service requirements, while the press-in ball joint design supports proper front-end geometry.

What This Part Helps Address

• Front-end looseness or instability
• Clunking or knocking from the lower suspension area
• Uneven tire wear related to worn suspension joints
• Steering pull caused by worn control arm components
• Excess movement in the front left lower suspension

Installation Notes and Tips

Confirm vehicle fitment by year, make, model, and front left lower position before installation. Because the ball joint is press-in, installation typically requires proper suspension service tools and alignment checks after replacement. Verify that the existing suspension configuration matches the listed application, including standard suspension notes where shown for certain Mercedes-Benz Sprinter 3500 models.

Quality Assurance

Moog manufactures this control arm assembly with attention to structural durability and corrosion protection for OE-style replacement service. RK621966 is built to meet the application requirements listed for the covered Sprinter platforms.