WIndow Lifter Mercedes SLK R172 Front Right O/S Window Regulator With Motor

The Mercedes SLK R172 Front Right Window Regulator with Motor is an original part from the Window Regulators and Motors group, designed for precise operation in the front right door of the SLK R172 generation roadster. The integrated electric drive ensures stable window guidance and repeatable, smooth operation under typical usage conditions. This solution is dedicated to users expecting factory fitment and preservation of the correct geometry of the window lifting mechanism.

Specifications and technical data

• SKU: A1727200446
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1727200446
• Substitutable numbers: A1727200446, A 172 720 04 46, A2078200642, A 207 820 06 42, A1727200246, A 172 720 02 46
• Location on the vehicle: Front, Right
• Category: Window Motors & Regulators

Purpose and Fitment for SLK R172 Body

The regulator has been specifically designed for operation in the front right door of the Mercedes SLK R172, taking into account the characteristic design of a roadster door with a low-slung window line. Proper window guidance is crucial for sealing, correct door closure, and interaction with the folding roof seals. Therefore, using a component from the same model platform allows for maintaining factory operating parameters.

The mechanism is prepared for installation in place of the original regulator, preserving the original mounting points and guide geometry. Thanks to this, no modifications to the door structure or the use of additional adapters are required after installation.

Construction and Function of the Regulator with Motor Assembly

The presented assembly combines a mechanical window regulator and an electric drive motor into a single unit. This configuration reduces the number of connections, simplifies installation and servicing, and also decreases the risk of play in the drivetrain. The construction is adapted for operation with the factory Mercedes electrical system, which promotes stable cooperation with comfort control modules.

In practice, this means:

• maintaining the correct speed for raising and lowering the window,
• proper interaction with comfort functions (e.g., interior vehicle control),
• adequate window guidance in the tracks, reducing the risk of misalignment.

Benefits of Using an Original Mercedes Part

Using a component from the same model line allows for maintaining the structural integrity of the door and avoiding problems typical of uncertain aftermarket replacements, such as imprecise fitment or unstable window operation. Factory fitment for the Mercedes SLK R172 translates to predictable mechanism behavior over a longer period of use.

The product belongs to the Window Regulators and Motors group, meaning it has been designed to handle the loads resulting from frequent, cyclical raising and lowering of the window while maintaining appropriate structural rigidity.

Characteristics of a Used Part

The offered regulator is a used part, which means it comes from a dismantled vehicle and has already undergone a period of use. Such components are often chosen for repairs where maintaining the original vehicle specification is crucial while optimizing costs. A properly selected used regulator with a motor allows for restoring full window functionality without the need for more expensive brand-new solutions.

If you are considering wider use of second-hand parts in your car, it is worth familiarizing yourself with an expert guide explaining how to safely select components by factory identifiers and how to assess the cost-effectiveness of such repairs – this is thoroughly discussed in the article Why Buying Used Gearboxes and Engines is Worth It – Facts Instead of Myths.

Expanding the Window Control Zone in a Mercedes

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