Audi A6 C8 Window Lifter Motor Door Rear Left N/S Drive Unit 4K0959811

The Audi A6 C8 Window Regulator Motor Left Rear Door is a precise component of the window lifting system, designed specifically for the rear left side of the body. Thanks to its factory design for Audi models, it ensures stable operation of the window mechanism and predictable performance during daily use.

Specifications and technical data

• SKU: 4K0959811
• Mark: Audi
• Condition: Used
• OEM Part Number: 4K0959811
• Substitutable numbers: 4K0959811, 4K0 959 811
• Location on the vehicle: Rear, Left
• Part type: Window Motor
• Category: Window Motors & Regulators

Purpose and Function in the Vehicle

The presented window regulator motor operates in the rear left area of the body, responsible for the smooth raising and lowering of the door window. It is a component from the Window Regulators and Motors group, working in conjunction with the guide mechanism and the vehicle's electrical system, allowing for convenient window control from the driver's panel or the passenger door button.

Due to its dedicated placement on the vehicle, the component is structurally adapted to the door's geometry, mounting points, and the window's operating range, minimizing the risk of stress and improper closing.

Construction and Fit for Audi A6 C8

The motor has been developed as a component of the window system in the Audi A6 C8 generation, adhering to the manufacturer's standards for durability and compatibility. Proper integration with the window regulator mechanism allows for:

• stable operation throughout the full range of window movement,
• correct interaction with the factory electrical system,
• maintenance of the speed and lifting force parameters specified by the manufacturer.

This precise fit limits the risk of mechanism overload and unwanted play, contributing to smooth, consistent window operation in daily use.

Condition, Application, and Benefits of Installation

The offered component is in Used condition, making it an attractive solution for users seeking a technically sound yet economical component to restore the functionality of the rear window. Replacing a damaged motor with a functional unit helps eliminate common failure symptoms such as the window stopping halfway, no response to the button, or uneven movement.

Key benefits of installation include:

• restoring full functionality of window control in the rear left door,
• maintaining consistency with the factory Audi window system,
• enabling cost savings on repairs while maintaining an appropriate level of quality.

Audi Window Regulators and Motors – Expansion and Service

If you are planning a comprehensive repair or upgrade of the door and window area in your Audi and need other components from the same group, such as window drives, guide mechanisms, or additional actuators, check the available parts in the Audi Window Regulators and Motors category.

Technical Support and Service Knowledge

When planning repairs within electrical and mechanical systems, it is advisable to broaden your knowledge of common faults in modern cars. A good reference point could be an article describing critical drive units in a popular Bavarian brand model – you can find it here: Troublesome BMW E90 Engines: Find Out What Can Ruin Your Budget!. This will help you better understand how prevention and proper part selection affect long-term operating costs.