Audi A3 8V Window Lifter Door Rear Right O/S Regulator Motor Unit 8V7839462

Audi A3 8V Window Lifter Door Rear Right O/S Regulator Motor Unit is an original component from the Window regulators and motors group, designed for the precise operation of the window in the rear right door. It ensures stable window guidance, proper power transmission, and repeatable mechanism performance in daily use. This solution is dedicated to users who expect factory-fit and predictable operation of the window lifting system.

Specifications and technical data

• SKU: 8V7839462
• Mark: Audi
• Condition: Used
• OEM Part Number: 8V7839462
• Substitutable numbers: 8V7839462, 8V7 839 462, 8V7839398B, 8V7 839 398 B
• Location on the vehicle: Rear, Right
• Category: Window Motors & Regulators

Purpose and vehicle placement

The presented window lifter is designed for installation in the rear right door of the Audi A3 8V. It is responsible for guiding the window along the rails and working with the drive unit, which translates into smooth opening and closing of the rear passenger-side window. Proper placement on the vehicle minimizes the risk of incorrect selection and facilitates the planning of door area repairs.

Mechanism construction and function

The window lifter belongs to the group of components responsible for controlling the window position in the door, working in conjunction with the motor and comfort control system. The design intended for Audi ensures:

• stable window guidance throughout the entire range of motion,
• proper torque transmission from the drive to the mechanism,
• operation adapted to the door geometry of the Audi A3 8V body.

As a result, the window lifting system maintains proper geometry, and the risk of jamming or uneven closing is limited. Using a component from the same design group as the factory-installed lifter helps maintain the consistency of the entire system.

Selection, compatibility, and identification parameters

The lifter belongs to the Window regulators and motors category, which facilitates its identification in parts catalogs and when comparing it with other solutions used in doors. The product has assigned part numbers and interchangeable numbers that allow for technically correct verification of compatibility with a specific vehicle equipment version. In practice, this means the possibility of precise matching to a given Audi unit based on catalog data or service documentation.

The component comes from the Audi brand offer, which helps maintain consistency with other window system components and limits the risk of installation problems resulting from dimensional or structural differences. The used condition allows for an economical restoration of the mechanism's efficiency while maintaining the original installation specification.

Practical application and benefits of installation

The use of this window lifter in the rear right door of the Audi A3 8V is particularly justified in situations where symptoms such as uneven window lifting, stopping halfway, window dropping, or noticeable play in the mechanism occur. Replacing it with a component from the same design group allows you to:

• restore correct operation of the window control in the rear door,
• maintain factory guidance and positioning of the window relative to the seals,
• minimize the risk of additional stress on the glass and seals,
• maintain cabin acoustic comfort thanks to proper window closing.

For workshops and individual users, it is important that installing a component intended for a specific location in the vehicle limits the need for modifications and allows focusing on the proper adjustment of the entire door system.

Audi window regulators and motors – expansion and door area service

If you are planning a comprehensive repair or upgrade of the door area in your Audi and need other elements from the same group, such as window lifting mechanisms, electric drives, or guides, check the available parts in the Audi window regulators and motors category.

More about used components in vehicle systems

When selecting used components for vehicle systems – both mechanical and electrical – it is worth knowing the principles of verification by catalog numbers and the real cost differences compared to new parts. A detailed discussion of this topic, along with procedures for selection by OEM numbers and practical examples, can be found in the guide Why it is worth buying used gearboxes and engines – facts instead of myths, which helps in making informed purchasing decisions for other automotive components as well.