Mercedes W251 Window Lifter Regulator Rear Right O/S Door Card Panel A2517303179

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W251 Window Lifter Regulator Rear Right O/S Door Card Panel is an original component from the Window regulators and motors group, designed for the rear right side of the vehicle body. It ensures stable window guidance and proper mounting of the door card, which translates into comfort of use and correct operation of the window lifting mechanism in your Mercedes.

Specifications and technical data

• SKU: A2517303179
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2517303179
• Substitutable numbers: A2517303179, A 251 730 31 79
• Location on the vehicle: Rear, Right
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The window lifter with door card mounting is dedicated to the rear right door area of the Mercedes W251 body. It is responsible for:

• precise window guidance in the tracks during raising and lowering,
• stable connection between the mechanism and the door card,
• maintaining the correct operating geometry of the entire window lifting system.

Thanks to its factory origin from the Mercedes brand, dimensional and structural compatibility with the original vehicle equipment is maintained, which reduces the risk of play, noise, or window jamming.

Benefits of using an original window lifter

Using this component in the rear right part of the body allows for restoring the proper operation of the window after damage or wear of the previous mechanism. The main advantages include:

• factory fit to the Mercedes W251 door structure,
• consistency with the original door card mounting system,
• maintaining the correct window movement path without additional modifications,
• reducing the risk of overloading the window lift motor due to the correct mechanism geometry.

This solution is particularly recommended for repairs where compatibility with the factory installation and predictable component behavior during long-term use are important.

Characteristics and installation in the rear right door area

The lifter is prepared for operation in a specific location on the body – rear, right side. Such assignment to the vehicle location facilitates the selection of the correct component and minimizes the risk of error when ordering. Installation is based on factory mounting points in the door, which allows for:

• preserving the original routing of guides and cables,
• maintaining proper fitment of the door card to the structure,
• reducing the time required for part adjustment during service.

The used nature of the component makes it an economical solution while being technically matched to the specifics of the W251 model.

Application in the window lifting system

As a part from the Window regulators and motors group, this lifter works with the window drive and the control system in the door. A correctly selected component:

• ensures smooth window movement without jerking,
• reduces the load transferred to the lift motor,
• helps maintain door tightness through proper window closure in the seals.

This is particularly important in vehicles used daily, where acoustic comfort and the reliability of the window mechanism have a direct impact on the perceived quality of use.

System expansion and selection of related parts

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

For larger service or modernization projects, it is also worth paying attention to potential costs associated with the vehicle's power unit – a practical overview of typical problems and failures in a popular model can be found in the article BMW E90 engine failures: check what can ruin your budget!, which shows how to plan service expenses in the long term.

Summary

Mercedes W251 Window Lifter Regulator Rear Right O/S Door Card Panel is an original component designed for the rear right part of the body, allowing for the restoration of proper window operation and stable mounting of the door card. Thanks to its fitment to the Mercedes W251 structure, it constitutes a practical, technically consistent solution for repairs of the window lifting system in this model.