Mercedes A238 Door Front Right O/S Window Lifter Regulator A2057204227

Mercedes A238 Door Front Right O/S Window Lifter Regulator is an original component from the Window regulators and motors group, designed for precise operation of the front passenger side window. Thanks to its factory-engineered design for the Mercedes brand, it ensures proper window guidance, stable operation, and compatibility with factory mounting points.

Specifications and technical data

• SKU: A2057204227-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2057204227
• Substitutable numbers: A2057204227, A 205 720 42 27
• Location on the vehicle: Front, Right
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The presented mechanism is designed for installation in the front – right side zone, responsible for the smooth raising and lowering of the passenger window. The construction, adapted to the specific geometry of Mercedes doors, allows for maintaining the correct window guidance angle, minimizing play, and reducing unwanted vibrations while driving.

As an item from the Window regulators and motors category, it works with the factory window control system, ensuring proper response to signals from the door switch and comfort modules, if present in the specific vehicle model.

Construction and fitment for Mercedes

The mechanism has been constructed specifically for Mercedes vehicles, which translates into:

• proper placement of mounting points in the door,
• maintaining the correct operating path of the window in the guides,
• compatibility with the original window motor (if provided in the given solution),
• consistency with the factory electrical installation and comfort control.

Thanks to this, the installation process is similar to the factory standard – without the need for door structure modifications or interference with the electrical system.

Condition, verification, and service application

The item is used, which in practice means it comes from disassembly but retains functionality allowing for further use in a vehicle. This type of part is particularly useful for:

• repairing a damaged mechanism after a collision or due to corrosion,
• eliminating window jams and uneven operation of the lifter,
• restoring full functionality to the passenger door zone.

It is always worth verifying the selection of the correct mechanism with the OEM part number and interchangeable numbers in the technical specification to ensure full compatibility with the specific body version and model year.

Benefits of using an original mechanism

Using an original window lifter mechanism in a Mercedes translates into a number of practical benefits:

• Factory fitment – no assembly problems, proper alignment with the door structure.
• Stable window operation – reduced risk of misalignment, jams, and excessive motor load.
• Consistency with the comfort system – proper cooperation with window control functions provided by the manufacturer.

This solution is particularly recommended in situations where you want to maintain operating characteristics close to the factory standard, without experimenting with replacements of uncertain fitment.

If you are planning a comprehensive repair or upgrade of the door and window zone in your Mercedes and need other elements from the same group, such as guides, lifter motors, or complete window mechanisms, check the available parts in the Mercedes Window regulators and motors category.

Additional information and technical support

When selecting used components for the window system, it is worth paying attention to the compatibility of the body version and vehicle equipment. In case of doubt, comparing the mechanism's construction with the part currently installed in the car and analyzing the data in the technical specification may be helpful.

If you are interested in how the proper selection of subassemblies and proven parts affects vehicle operating costs and workshop downtime, check out the article: how a wide assortment in one warehouse shortens car downtime at the mechanic. For drivers considering the purchase of a used BMW and wanting to better understand the potential service costs of power units, the following guide will also be helpful: BMW E90 engine failures – what can ruin your budget.