Mercedes W205 DoorWindow Regulator Lifter Mechanism Front Right O/S A2057205023

Mercedes W205 DoorWindow Regulator Lifter Mechanism Front Right O/S is an original component from the Window Regulators and Motors group, designed for precise operation in the passenger door. It ensures stable window guidance, proper power transmission, and repeatable, smooth operation of the window lifting and lowering system in the W205 body.

Specifications and technical data

• SKU: A2057205023-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2057205023
• Substitutable numbers: A2057205023, A 205 720 50 23
• Location on the vehicle: Front, Right
• Part type: Window Regulator
• Category: Window Motors & Regulators

Purpose and vehicle placement

The presented mechanism is designed for installation in the front right door, i.e., on the passenger side, in Mercedes C-Class W205 generation models. It is responsible for guiding the window in the tracks and transferring torque from the drive to the cables or support arms, which translates into repeatable window movement across the full range. Thanks to its dedicated placement in the front right door zone, the component works with the factory mounting, mounting points, and door panel structure, which reduces the need for additional modifications during installation.

Construction and function of the regulator mechanism

The window regulator mechanism in the Mercedes W205 acts as an intermediate component between the control motor and the window, responsible for:

• stable vertical window guidance,
• even load distribution during lifting and lowering,
• power transmission from the motor to the window while maintaining proper geometry,
• holding the window in a set position after movement is completed. A properly selected mechanism reduces the risk of jamming, excessive play, and uneven closing, which is important for both user comfort and acoustic tightness as well as protecting the interior from moisture.

Benefits of using an original mechanism

Using an original window regulator mechanism in a Mercedes W205 allows you to maintain the factory operating parameters of the system. Key advantages include:

• precise fit to the door structure – compatibility with factory mounting points and guides,
• consistent cooperation with the factory regulator motor and electrical installation,
• preservation of the window movement characteristics intended by the manufacturer,
• reduction of the risk of improper closing, rattling, and excessive vibrations. Choosing a used, original component from dismantling is often a cost-effective solution while maintaining the proper quality of workmanship and compatibility with the W205 body.

Component condition and installation aspects

The offered mechanism comes from a Mercedes vehicle and is marked in the warehouse system via a dedicated product SKU. The item is classified as used, which means it has been previously operated but is suitable for further use after proper installation. The mechanism is intended for installation in the front right door area, which has been specified in the placement on vehicle parameter. Before installation, it is recommended to perform a standard check of the condition of the guides, mounting points, and the cooperating motor to ensure the correct operation of the entire window lifting system.

Selection by numbers and additional technical information

The item has a factory OEM part number, as well as assigned interchangeable numbers, which facilitates verification of compatibility with a specific body version and production year. In case of doubts regarding fitment for a given vehicle, it is worth using these markings when comparing with the currently installed mechanism. If you are planning a comprehensive repair or modernization of the door and side window area in your Mercedes and need other components from the same group, such as guides, regulator motors, or complete mechanisms with a drive, check the available parts in the Mercedes Window Regulators and Motors category.

Substantive support when choosing used components

When selecting used components for body and window drive systems, it is worth knowing the general rules for verifying technical condition and the cost-effectiveness of purchasing parts from dismantling. You can read more about how to approach the purchase of key used components, selection procedures by numbers, and real cost differences in the article: Why it is worth buying used gearboxes and engines – facts instead of myths.