Audi A4 B7 Cabrio Rear Window Lifter Regulator Mechanism Right O/S 8H0839398A

Audi A4 B7 Cabrio Rear Window Lifter Regulator Mechanism Right O/S is an original component from the Window regulators and motors group, designed for operation in the rear right window of the convertible body style. It ensures stable window guidance, proper raising and lowering, and correct integration with the factory control system in your Audi.

Specifications and technical data

• SKU: 8H0839398A
• Mark: Audi
• Condition: Used
• OEM Part Number: 8H0839398A
• Substitutable numbers: 8H0839398A, 8H0 839 398 A
• Location on the vehicle: Rear, Right
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The presented mechanism is dedicated to the rear right side of the Audi A4 B7 generation Cabrio. It is responsible for the precise movement of the window within the guides, maintaining it in the set position, and smooth cooperation with the control buttons in the doors and console. A properly functioning window regulator is crucial for:

• cabin tightness when the window is closed,
• acoustic comfort when driving at higher speeds,
• trouble-free opening and closing of the window during daily use,
• proper operation of the window lowering system when folding the convertible roof.

Construction and fitment for Audi A4 B7 Cabrio

The mechanism has been designed specifically for the geometry of the rear right convertible body section, ensuring it retains factory mounting points and the correct window movement kinematics. This means that after proper installation, the window moves along the axis intended by the manufacturer, without excessive play or stress.

As a component from the Window regulators and motors group, it works with the original electric drive and the vehicle's electrical system, allowing for the retention of control functions from factory switches and comfort modules.

Benefits of using an original mechanism

Using the correct rear right window regulator mechanism in an Audi A4 B7 Cabrio helps to reduce typical problems associated with improper window operation, such as jamming, misalignment, or excessive load on the drive. In practice, this translates into:

• stable window movement throughout the entire operating range,
• lower risk of damage to the glass or seals,
• preservation of the factory closing geometry with the soft top,
• consistent operation with other window mechanisms in the vehicle.

This solution is particularly important in convertible bodies, where the precision of window alignment affects the tightness and comfort of using the vehicle.

Characteristics of the used component

The offered mechanism is a used part, which allows for an economical repair of the window system while maintaining the original design. This type of part is a good choice when the existing regulator has suffered mechanical damage or operational wear, and you want to maintain compatibility with the factory Audi solution.

Technical support and additional materials

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 guides, window motors, or complete mechanisms, check the available parts in the Audi window regulators and motors category.

When planning larger service works, it is also worth paying attention to the condition of the engine unit in your car. For comparison with other popular models and a better understanding of potential repair costs, you can use the advice contained in the article BMW E90 engine failures: check what can ruin your budget!, which shows how to properly prepare for larger service investments.