Audi A4 B7 B6 Cabrio Rear Window Lifter Regulator Mechanism Right O/S 8H0839398

Audi A4 B7 B6 Cabrio Rear Window Lifter Regulator Mechanism Right O/S is an original mechanism from the Window regulators and motors group, designed for precise operation in the rear right body section. It ensures stable window guidance, proper closing, and repeatable performance in the daily use of a convertible.

Specifications and technical data

• SKU: 8H0839398
• Mark: Audi
• Condition: Used
• OEM Part Number: 8H0839398
• Substitutable numbers: 8H0839398, 8H0 839 398
• Location on the vehicle: Rear, Right
• Category: Window Motors & Regulators

Purpose and function in the Audi A4 Cabrio

The mechanism is designed for installation in the rear right part of the Audi A4 B6/B7 generation convertible body. It is responsible for the smooth raising and lowering of the window, as well as its proper guidance in the tracks, which is important for both driving comfort and cabin sealing.

Thanks to a design consistent with Audi's factory standards, the component works with the original window motor and the vehicle's factory electrical system, which facilitates installation and subsequent operation.

Construction and installation fitment

The lifter uses a system of tracks and cables adapted to the specific geometry of the door/rear panel in the Cabrio version. The arrangement of mounting points corresponds to the factory mounting holes, which allows for:

• direct replacement of a damaged mechanism without bodywork modifications,
• maintaining the correct window movement geometry,
• proper interaction with seals and the window frame.

Such fitment reduces the risk of stress on the glass and minimizes noise and vibration during window operation.

Benefits of using an original mechanism

Using an original regulator in the rear right window of an Audi A4 B6/B7 convertible helps maintain the consistency of the entire window system. This is particularly important in a body style without a fixed roof frame, where the precision of window alignment affects:

• sealing at higher speeds,
• reduction of wind noise,
• stable closing of doors and side elements.

For the user, this means more comfortable vehicle operation and a lower risk of needing additional adjustments after installation.

Condition and service application

The item comes from the used parts group, which allows for an economical repair of the window system while maintaining the original Audi design. This type of component is often chosen in situations where mechanical damage has occurred (e.g., broken cables, seized tracks) and it is necessary to replace the complete mechanism.

During installation, it is recommended to check the condition of the glass, tracks, and mounting points in the body to fully utilize the capabilities of the functional regulator and avoid recurring faults resulting from improper adjustment.

Audi window regulators and motors – expansion and service

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

Support in choosing used parts

When selecting a used window mechanism for a specific body version and mounting side, it is worth knowing the basic principles of selecting such components and verifying them before installation. Practical tips on making an informed choice of parts from the secondary market can be found in the guide Used parts – your guide to the best offers in the automotive store, which will help optimize service costs without sacrificing appropriate quality.

Additionally, if you are interested in issues related to the durability of power units and want to better plan your car maintenance budget, it is worth reading the article Faulty BMW E90 engines: check what can ruin your budget!, which shows how analyzing typical faults helps avoid costly surprises in other models and brands as well.