Mercedes W163 Windscreen Front Window Wiper Arm Right O/S A1638201844

Mercedes W163 Windscreen Front Window Wiper Arm Right O/S is an original component from the Wiper arms group, designed to operate on the driver's or passenger's side depending on the steering wheel version. It ensures stable wiper blade movement across the windshield, which translates into a clear field of vision and safe vehicle operation in difficult weather conditions. This is a solution for users who expect precise fitment and predictable wiper system performance.

Specifications and technical data

• SKU: RHD-A1638201844
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1638201844
• Substitutable numbers: A1638201844, A 163 820 18 44
• Location on the vehicle: Front, Right
• Category: Wiper Arms

Application and fitment for Mercedes W163

The presented wiper arm has been designed specifically for the windshield of Mercedes W163 series models, intended for the right side of the vehicle. The appropriate mounting geometry and arm length allow for proper blade adhesion to the glass and correct coverage of the designated working area. Thanks to a design consistent with factory specifications, the wiper system maintains its original range of motion and kinematics.

Construction and technical characteristics

The Mercedes W163 Windscreen Front Window Wiper Arm Right O/S is based on a metal support structure, which is responsible for rigidity and resistance to deformation during operation in rain, snow, or at higher speeds. The applied joint and mounting socket are prepared to work with the factory wiper mechanism, which facilitates installation and reduces the risk of operational play. The arm profile has been selected to ensure even pressure of the blade against the windshield along its entire length, minimizing streaks and uncleared areas.

Function in the wiper system

The right wiper arm plays a key role in maintaining windshield clarity on the side assigned to its operation. It is responsible for:

• transferring torque from the wiper mechanism to the blade,
• maintaining a stable blade movement path relative to the windshield,
• ensuring appropriate pressure throughout the entire range of motion,
• reducing vibration and noise during wiper operation.

Thanks to the proper fit to the Mercedes W163 body structure, the arm works with the windshield at the correct angle, which improves the efficiency of clearing water and debris.

Condition, installation, and operation

The component comes from a used vehicle, which allows for maintaining the factory performance characteristics of the wiper system while optimizing service costs. The arm is ready for installation in place of the factory counterpart, without the need for modifying mounts or interfering with the drive mechanism. In practice, this means:

• maintaining the original resting position of the blade,
• correct range of motion on the right side of the windshield,
• compatibility with standard blades intended for this model.

When replacing, it is recommended to check the condition of the mounting axle and the wiper mechanism to fully utilize the capabilities of the newly installed arm.

Benefits of using an original wiper arm

Using a dedicated wiper arm for the Mercedes W163 on the right side translates into a number of practical benefits. Precise fitment for the specific model reduces the risk of improper blade operation, and consistency with the factory design supports the durability of the entire system. This solution is particularly beneficial for servicing vehicles used daily, where consistent performance and predictable behavior in rain or during winter are important.

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

To better take care of the durability of components in your car in demanding weather conditions, it is also worth reading the guide on the impact of temperatures on the cooling system – you will find it in the article Summer heat vs. cooling system: used radiators and fans as a guarantee of savings.