Mercedes ML W166 Wiper Arm Windscreen Driver Side Right O/S A1668200844

The Mercedes ML W166 Windshield Wiper Arm (Right Side) is an original part from the Wiper Arms group, intended for the driver's side. Designed by the vehicle manufacturer, it ensures proper wiper blade geometry, stable pressure on the windshield, and predictable performance in all weather conditions.

Specifications and technical data

• SKU: rhd-A1668200844
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1668200844
• Substitutable numbers: A1668200844, A 166 820 08 44
• Location on the vehicle: Right
• Category: Wiper Arms

Intended Use and Fitment

The wiper arm is dedicated to Mercedes ML W166 generation models and is installed on the right side of the vehicle, on the driver's side. Thanks to its factory design, the correct resting position of the blade, appropriate working angle, and compatibility with the wiper mechanism and spindle mount are maintained.

Original origin from the Mercedes brand means adherence to factory dimensional tolerances, which translates to secure installation without play and proper blade contact with the windshield along its entire length.

Construction and Technical Specifications

The wiper arm is designed as a rigid, precisely profiled component that transfers force from the drive mechanism to the wiper blade. The construction includes:

• appropriately selected rigidity to minimize vibrations during operation,
• a profile matched to the curvature of the windshield in the Mercedes ML W166,
• integrated mounting for the wiper mechanism spindle,
• a blade holder ensuring stable grip and even pressure.

This configuration allows for high windshield cleaning efficiency, reduces streaking, and improves visibility, which directly impacts driving safety.

Condition and Benefits of Using a Used Part

The item is offered as a used part, allowing for economical repair of the wiper system while maintaining original manufacturing quality. Compared to low-cost aftermarket alternatives, the factory wiper arm offers more stable operation, better windshield fit, and greater resistance to deformation from use.

Using an original driver's side arm helps eliminate common issues such as uneven blade pressure, operational noise, or incorrect resting position, leading to more comfortable and predictable vehicle operation.

Why Choose Genuine Mercedes Wiper Arms

For the wiper system, maintaining proper geometry and element rigidity is crucial, making the choice of an original arm a technically safe and predictable solution. Factory Wiper Arms are designed for specific windshields, mechanism kinematics, and body aerodynamics, minimizing the risk of improper operation after installation.

If you are planning a comprehensive repair or upgrade of the front windshield visibility area in your Mercedes and need other parts from the same group, such as additional arms, levers, or brackets, check the available parts in the Mercedes Wiper Arms category.

To better plan your vehicle's service strategy and make informed decisions about purchasing used components, it is worth reading the guide on selecting suspension components and the structural differences between standard and sports versions: Standard vs. Sport Suspension – Construction Differences and Is It Worth Buying Used Suspension Parts?.