Mercedes CLA C117 Coupe Window Lifter Regulator Door Front Right O/S A1177200279

The Mercedes CLA C117 Coupe Right Front Window Regulator is an original part from the Window Regulators and Motors group, designed for installation in the right front door of a coupe body. It ensures stable window guidance, proper operation of the lifting and lowering mechanism, and maintains the factory functionality of the window control on the passenger side.

Specifications and technical data

• SKU: A1177200279
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1177200279
• Substitutable numbers: A1177200279, A 117 720 02 79
• Location on the vehicle: Front, Right
• Category: Window Motors & Regulators

Purpose and Fitment

The presented window regulator has been specifically designed for Mercedes CLA C117 coupe models, intended for the front, right side of the vehicle. The construction matches the factory solution used by the manufacturer, which facilitates installation in place of a worn or damaged mechanism without the need for modifications to mountings or guides.

By maintaining the original geometry of the guides and mounting points, the mechanism allows for precise positioning of the window in the door frame, reducing the risk of leaks, creaks, or excessive play when closing the door.

Function and Performance Parameters

The window regulator is responsible for transferring the drive from the lift motor to the window and for its stable vertical guidance. In practice, this means:

• smooth raising and lowering of the window on the passenger side,
• maintaining proper window pressure against the seals,
• reduction of vibrations and noise during driving,
• maintaining correct cooperation with the factory window control system.

A properly selected and functional regulator is crucial for the comfort of using the right-side door and for protecting the interior from water and drafts.

Product Characteristics and Condition

The part comes from the Mercedes offering, which means it adheres to factory standards of manufacturing, geometry, and compatibility with original door hardware. The product is used, which in practice allows for an economical replacement of the mechanism while maintaining compliance with the solution originally fitted to the CLA C117 Coupe model.

For correct part selection, it is advisable to verify the placement on the vehicle and the OEM part number in the service documentation or vehicle technical specifications. This will help you avoid installation problems and ensure the proper operation of the entire window lifting system.

Mercedes Window Regulators and Motors – Door Area Expansion and Service

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

Technical Support and Service Knowledge

When working with window and door systems, it is beneficial to know the typical structural weak points of individual models to avoid unnecessary future costs. A good supplement to knowledge about operation and repairs can be an article dedicated to problematic powertrains in a popular Bavarian brand model – you can find it here: Faulty BMW E90 Engines: Find Out What Can Ruin Your Budget!. Although it concerns a different manufacturer, it shows how important conscious diagnostics and preventive maintenance of the entire vehicle are.