Mercedes W447 Wiper Arm Windshield Driver's Side Front Right O/S A4478200300

The Mercedes W447 driver's side front windshield wiper arm is an original part from the wiper arms category, designed for the driver's side of the front windshield. A used OEM part ensures proper blade pressure geometry against the glass, stable operation in rain, and compatibility with the factory wiper mechanism in the Mercedes W447.

Specifications and technical data

• SKU: rhd-A4478200300
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A4478200300
• Substitutable numbers: A4478200300, A 447 820 03 00, BG
• Location on the vehicle: Front, Right
• Category: Wiper Arms

Intended Use and Fitment for Mercedes W447

The presented wiper arm has been specifically designed for the Mercedes W447 body, taking into account the characteristic windshield curvature and the wiper's range of motion on the driver's side. Its placement on the vehicle is the front, right side, meaning the component works with the factory mounting and wiper mechanism, maintaining the correct working angle and appropriate windshield clearing area.

Thanks to its construction conforming to manufacturer standards, the wiper arm retains proper rigidity and resistance to deformation, which translates to even blade pressure and clear visibility in challenging weather conditions.

Wiper Arm Construction and Technical Properties

The driver's side wiper arm for the Mercedes W447 is manufactured as a precision metal component with a factory-standard mount for the wiper mechanism and a blade holder. The construction ensures:

• stable blade guidance across the windshield surface,
• appropriately selected working pressure,
• smooth operation throughout the full range of motion,
• maintenance of the factory wiper system geometry.

The original wiper arm in this series is designed to reduce vibrations at higher speeds and ensure a repeatable working path, which is important for both driving comfort and safety.

Product Condition and Benefits of Choosing a Used Part

The offered wiper arm is a used part, sourced from disassembly, which allows for maintaining the factory operating parameters of the system while reducing costs. Choosing an original, used component is beneficial wherever the following are important:

• maintaining compliance with the original Mercedes design,
• secure fitment to the vehicle's mounting,
• consistent appearance with other body elements.

This solution is particularly attractive for users who want to restore proper wiper function after arm damage or wear and tear, without having to resort to aftermarket replacements with uncertain geometry.

Practical Application and User Comfort

A functional driver's side wiper arm directly impacts driving safety – it is responsible for clearing the critical field of vision. A correctly chosen component:

• ensures even water and debris removal,
• reduces streaks and blade skipping,
• maintains stable contact with the windshield throughout its entire range of motion.

In conjunction with a properly selected wiper blade, the arm allows for maintaining comfortable visibility both in heavy rain and during daily driving in the city and on the highway.

Other Mercedes Wiper Arms and Tuning Tips

If you are looking for other Mercedes wiper arms for your car, check out the Mercedes wiper arms available in our store to select a component tailored to your specific model and mounting side. This will allow you to easily assemble a complete wiper set that meets manufacturer requirements.

When planning more extensive modifications or refreshing your car using parts from disassembly, it's worth familiarizing yourself with the practical tips contained in the article Best Used Parts for Your Car Tuning, which discusses how to consciously choose used components and effectively combine them with the existing vehicle configuration.