Wiper Arm Mercedes EQA H243 W247 Front Passenger Side N/S Left A2478204800

The Passenger Side Front Wiper Arm (Left Side) for Mercedes EQA H243 / W247 is an original part from the Wiper Arms group, specifically designed for vehicles in this series. Precise mounting geometry and an appropriately selected arm length ensure stable wiper blade operation and effective water removal from the driver's and passenger's field of vision. This solution is dedicated to users who expect factory-fitment and predictable wiper system performance.

Specifications and technical data

• SKU: rhd-A2478204800
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2478204800
• Substitutable numbers: A2478204800, A 247 820 48 00
• Location on the vehicle: Front, Left
• Category: Wiper Arms

Purpose and Vehicle Placement

The presented wiper arm is intended for installation on the front windshield on the left side, corresponding to the passenger's position in vehicles with the appropriate steering configuration. The component works with the front wiper mechanism, transferring motion from the gearbox to the wiper blade and maintaining it in the correct position relative to the windshield.

This placement is crucial for uniform windshield cleaning, especially in the passenger's visibility area and the side portion of the driver's field of vision. The appropriately selected working angle of the arm reduces vibrations and improves blade stability while driving in rain or at high speeds.

Construction and Technical Function of the Wiper Arm

The wiper arm in this Mercedes model is designed as a rigid, precisely profiled element that:

• ensures proper blade pressure against the windshield along its entire working length,
• maintains a constant wiper path, consistent with the factory operating range,
• minimizes the risk of the blade skipping or lifting off the windshield surface.

Thanks to the factory design of the arm, compatibility with the original wiper mechanism and the intended type of wiper blade is maintained. This is particularly important in modern models such as the EQA H243 and W247, where the windshield geometry and wiper kinematics are precisely matched.

Benefits of Using an Original Mercedes Arm

Using an original wiper arm for the Mercedes EQA H243 / W247 offers a range of practical operational benefits:

• Factory Fitment – correct mounting angle, appropriate arm length and profile, which translates to proper wiper blade reach.
• Stable Operation in Difficult Conditions – reduced vibrations and noise, especially at higher speeds and heavy rainfall.
• Windshield Protection – correct pressure reduces the risk of point loading and scratches, provided a functional wiper blade is used.
• Consistency with Other Body Elements – maintaining the original styling line of the cowl area and the front windshield.

The element in used condition allows for an economical replacement of a damaged arm while maintaining the original manufacturer's specifications, which is beneficial in terms of both cost and installation compatibility.

Professional Installation and Service Application

The passenger side front windshield wiper arm for the Mercedes EQA H243 / W247 is frequently used in both independent workshops and service centers specializing in the Mercedes brand. Thanks to its factory design, installation is predictable and can be performed using standard workshop tools.

In service practice, this type of arm is primarily used in situations such as:

• mechanical damage to the arm (bending, cracking, worn mounting),
• improper wiper operation on the passenger side,
• the need to restore the original configuration after a collision or body repairs in the cowl area.

For users who wish to deepen their knowledge on the advantages of using original components, an article explaining the importance of OEM parts and operational safety will be useful – you can find it here: OEM Quality and Safety Guarantee – Why Used Original Car Parts Are the Best Choice for Your Car?.

Expanding the Wiper System in Mercedes

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