Rear Wishbone Mercedes W164 W251 Right O/S Control Arm Strut A1644270044

Mercedes W164 W251 Rear Right Upper Control Arm is a component from the Control Arms and Ball Joints group, designed for the rear right part of the suspension. Engineered for Mercedes SUV and VAN models, it ensures stable handling, precise wheel guidance, and correct rear axle geometry, contributing to safe and predictable vehicle behavior.

Specifications and technical data

• SKU: A1644270044
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1644270044
• Substitutable numbers: A1644270044, A 164 427 00 44
• Location on the vehicle: Rear, Right
• Category: Control Arms, Ball Joints & Assemblies

Purpose and Function in Suspension

The presented control arm operates in the rear axle area on the right side, responsible for maintaining the correct wheel position relative to the body. As part of a multi-link suspension system, it works with other suspension components, transferring vertical and lateral loads and limiting undesirable changes in wheel toe and camber during driving.

Thanks to its carefully selected geometry and structural rigidity, the control arm helps maintain:

• driving stability at higher speeds,
• confident cornering,
• even tire wear,
• proper functioning of safety systems (ABS, ESP).

Compatibility with Mercedes W164 and W251

The Mercedes W164 W251 Rear Right Upper Control Arm has been developed with the factory suspension solutions used in these vehicle generations in mind. This means maintaining the original operating characteristics of the rear axle without the need for modifications to other system components.

Its placement on the vehicle, specified as rear – right side, facilitates the selection of the correct component during repair or replacement after a collision, mechanical damage, or excessive wear of cooperating elements (e.g., bushings, ball joints).

Performance Characteristics and Installation Benefits

The control arm designed for the rear right side of the vehicle allows for the restoration of correct suspension geometry after damage resulting from operation or impact with road obstacles. A properly selected component from this group reduces the risk of:

• vehicle pulling to one side,
• excessive play in the suspension,
• vibrations transmitted to the body,
• accelerated wear of tires and cooperating components.

Replacing the control arm with a part structurally consistent with Mercedes solutions allows for the retention of factory mounting points, which simplifies installation and subsequent geometry adjustment at a service center.

Condition and Origin of the Component

The offered control arm is a used part, sourced from a dismantled Mercedes vehicle. This type of OEM component retains the original design and operating parameters intended by the manufacturer, which is particularly important for components responsible for wheel guidance and driving safety.

Choosing a used control arm from dismantling is a cost-effective solution, while also allowing for the maintenance of suspension system integrity in line with the vehicle's original design specifications.

Related Suspension Components and Further Reading

During rear axle service, it is advisable to check the condition of other suspension components, such as other control arms, ball joints, or mounting elements. It is good practice to conduct a comprehensive inspection of the entire system to avoid the need for further intervention after a short period of operation.

To better understand the relationships between individual suspension components and the symptoms of their wear, it is recommended to consult the guide: Suspension System – A Comprehensive Guide to Shock Absorbers, Control Arms, and Stabilizers, which discusses practical aspects of diagnosing and operating these sub-assemblies.

If you are planning a comprehensive repair or upgrade of the suspension area in your Mercedes and need other parts from the same group, such as additional control arms, ball joints, or mounting elements, check the available parts in the Mercedes Control Arms and Ball Joints category.