Audi A7 4G Sportback Rear Door Window Lifter Mechanism Left N/S 4G8839461C

The Left Rear Door Window Regulator Mechanism for Audi A7 4G Sportback is an original part from the Window Regulators and Motors group, designed for installation on the rear left side. It ensures precise window guidance, stable operation throughout its entire movement range, and maintains the factory comfort and safety parameters of your Audi.

Specifications and technical data

• SKU: 4G8839461C
• Mark: Audi
• Condition: Used
• OEM Part Number: 4G8839461A
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Vehicle Application and Function

The presented mechanism is dedicated to the Sportback body style and operates in the rear left door area. It is responsible for the smooth raising and lowering of the window, maintaining it in the correct position, and ensuring proper sealing of the window opening while driving and stationary. Thanks to its construction, which aligns with Audi's factory solutions, the part works seamlessly with the original door hardware, preserving the correct guide geometry and the operational characteristics of the window system.

Construction and Technical Specifications

The window regulator mechanism utilizes a system of guides and cables adapted to the Sportback door shape, allowing for stable window guidance throughout its entire movement range. The mounting points are matched to the factory mounting holes, which simplifies servicing and reduces replacement time. The design solution implemented by Audi ensures:

• adequate rigidity of the window lifting system,
• repeatable operation during multiple opening and closing cycles,
• compatibility with factory door hardware and upholstery.

Practical Application and Installation

The mechanism is intended for installation in the rear left part of the vehicle, replacing the factory window regulator. By maintaining the original mounting geometry, a near plug-and-play replacement is possible, without the need for door structure modifications. In practice, this means that after correct installation, the window should move evenly, without jamming or excessive play, and the window system will retain the parameters required by the vehicle manufacturer.

Characteristics of a Used Part

The offered mechanism is from the group of used original parts, allowing for the preservation of factory specifications at a favorable repair cost. This type of solution is often chosen for window servicing in premium vehicles, where precise fitment to the existing door assembly is crucial. If you want to better understand how to safely and consciously use the second-hand parts market, an expert guide will be helpful: Used Car Parts: Myths and Facts You Need to Know.

Technical Support and Part Selection

When selecting the correct window regulator mechanism for a specific Audi configuration, it is always advisable to base your choice on vehicle data and manufacturer markings. For more complex drivetrain repairs, knowledge of selection procedures based on technical identifiers may also be useful – this is discussed in more detail in the guide: Why Buying Used Gearboxes and Engines is Worth It – Facts Instead of Myths. If you are planning a comprehensive repair or upgrade of the window area in your Audi and need other parts from the same group, such as window guides, lifting mechanisms, or electric drives, check the available parts in the category Audi Window Regulators and Motors.