Wiper Arm Mercedes W204 W207 Windshield Front Passenger's Side A2078200644

The Mercedes W204 / W207 Passenger Side Windshield Wiper Arm is an original part from the Wiper Arms group, designed for the passenger side of the windshield. Engineered by the vehicle manufacturer, it ensures proper wiper blade pressure geometry and stable wiper system operation in daily use. This is a practical solution for users who want to restore correct visibility and maintain the original operating parameters of the mechanism.

Specifications and technical data

• SKU: rhd-A2078200644
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2078200644
• Substitutable numbers: A2078200644, A 207 820 06 44, KD
• Location on the vehicle: Front
• Category: Wiper Arms

Intended Use and Technical Function

The wiper arm has been specifically developed for installation on the passenger side windshield, guaranteeing the correct range of motion for the wiper blade and proper coverage of the driver's field of vision. The appropriately selected length, angle, and mounting profile allow for smooth cooperation with the wiper drive mechanism, without excessive vibration or noise.

This component is responsible for transferring torque from the wiper mechanism to the blade, therefore its rigidity, mounting method, and manufacturing precision directly impact the effectiveness of windshield cleaning in rain, snow, or during driving in challenging road conditions.

Benefits of Using an Original Arm

Using an original wiper arm in a Mercedes allows you to maintain the original operating parameters of the entire system. Key benefits include:

• correct fit to the vehicle's mounting point, without the need for modifications,
• stable wiper blade operation on the windshield, reducing streaks and skipping,
• maintaining proper pressure along the entire length of the blade,
• compatibility with the original wiper movement range on the passenger side.

This provides the driver with predictable, repeatable wiper system performance, which translates to better visibility and driving safety in varying weather conditions.

Installation Characteristics

The wiper arm belongs to the group of components that are mounted directly in the windshield area. The design intended by the vehicle manufacturer allows for the removal of the old arm and installation of the new one using standard workshop tools. Proper installation requires setting the arm in the correct resting position and tightening the mounting securely to maintain the wiper blade's line of operation relative to the windshield.

Due to its original origin, the arm is compatible with the factory drive mechanism and wiper blades designed for the specific model, which simplifies servicing and subsequent replacement of the wiper blades themselves.

Condition and Practical Application

The offered part comes from the used parts group, allowing for an economical repair of the wiper system while maintaining the original construction. This is a good solution in situations where the existing arm has become bent, damaged due to corrosion, collision, or improper use (e.g., forcibly detaching frozen wiper blades from the windshield).

By choosing this arm, the user restores the correct operation of the passenger side wiper, which is important for both daily city driving and longer journeys, where stable windshield clearing contributes to driving comfort and safety.

Expanding the Wiper System in a Mercedes

If you are planning a comprehensive repair or upgrade of the windshield area in your Mercedes and need other parts from the same group, such as additional arms, mounts, or components that work with the blades, check the available parts in the Mercedes Wiper Arms category.