Audi A4 S4 B6 B7 8E Door Window Lifter Mechanism Rear Right O/S 8E0839461A

Audi A4 S4 B6 B7 8E Door Window Lifter Mechanism Rear Right O/S is an original component from the Window regulators and motors group, designed for the rear right side of the vehicle body. It ensures proper operation of the side window, stable guidance, and reliable lifting and lowering, which directly affects the comfort of using the vehicle and the tightness of the cabin.

Specifications and technical data

• SKU: 8E0839461A
• Mark: Audi
• Condition: Used
• OEM Part Number: 8E0839461A
• Substitutable numbers: 8E0839461A, 8E0 839 461 A
• Location on the vehicle: Rear, Right
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The presented mechanism is dedicated to Audi A4 and S4 B6/B7 generation models, mounted on the rear right side of the body. It is responsible for the precise guidance of the window in the tracks and transferring the drive from the motor to the glass, which allows for smooth adjustment of its position using the control buttons in the door or the driver's panel.

A properly selected and functional window lifter reduces the risk of jams, play, and unwanted noises during operation, and also helps maintain proper pressure of the glass against the seals, which is important for interior acoustics and protection against moisture.

Benefits of using an original mechanism

Using an original window lifter mechanism in an Audi brings a number of practical benefits:

• Factory fit – design consistent with the vehicle manufacturer's solutions, without the need for modifications to mounts or installation.
• Stable window operation – proper guidance in the tracks reduces the risk of misalignment and excessive load on the drive.
• Compatibility with factory controls – works seamlessly with the car's original switches and electrical installation.
• Safe operation – a properly functioning mechanism reduces the risk of the window suddenly getting stuck in an open or closed position.

By maintaining factory design parameters, this component fits well into the existing door system, which facilitates installation and subsequent operation.

Condition and performance characteristics

The offered mechanism comes from dismantling and is a used part, which allows for combining reasonable cost with maintaining the original Audi specification. This type of solution is particularly attractive for maintenance repairs when the priority is to restore full window functionality within a controlled budget.

The mechanism will work well both as a replacement for a damaged lifter (e.g., after cable breakage, wear of guides, or drive failure) and in situations where the first symptoms of unstable window operation appear and a preventive replacement of the component is necessary.

Installation and operational tips

During installation, it is worth paying attention to several technical aspects that affect the durability and smoothness of the system's operation:

• checking the condition of the window guides and door seals,
• correct positioning of cables and window mounting points,
• verifying the correct operation of the window in the full range of motion after installation,
• verifying cooperation with the electrical installation and window controls.

Professional installation and proper adjustment minimize the risk of recurring faults and ensure comfortable window operation in daily vehicle use.

If you are planning a comprehensive repair or upgrade of the side window and door area in your Audi and need other components from the same group, such as lifter mechanisms, drives, or complete control units, check the available parts in the Audi Window regulators and motors category.

For drivers interested in a broader context of car maintenance costs and the impact of failures on the budget, an article devoted to problematic power units in a popular model of the Bavarian brand may be useful – more information can be found in the material BMW E90 faulty engines: check what can ruin your budget!.