Audi A4 B7 B6 Cabrio Rear Window Lifter Regulator Mechanism Left N/S 8H0839397

Description

Audi A4 B7 B6 Cabrio Rear Window Lifter Regulator Mechanism Left N/S is an original mechanism from the Window regulators and motors group, designed for installation on the rear left side of the convertible body. It ensures proper guidance and stable lifting of the window, which is crucial for driving comfort, cabin sealing, and the correct operation of the folding roof.

Specifications and technical data

• SKU: 8H0839397
• Mark: Audi
• Condition: Used
• OEM Part Number: 8H0839397
• Substitutable numbers: 8H0839397, 8H0 839 397
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Purpose and function in the Audi A4 Cabrio

The mechanism has been designed specifically for the rear left window of the Audi A4 B6/B7 generation convertible. It is responsible for the smooth guidance of the window in the tracks and for transferring power from the motor to the glass, enabling efficient opening and closing. A properly functioning window lifter is particularly important in a convertible, where it works in conjunction with the roof system and side seals.

Construction and mounting fitment

The window regulator utilizes factory mounting geometry, ensuring it fits the original mounting points in the door/side panel without the need for modifications. The design intended for operation in the rear part of the body on the left side ensures proper window guidance throughout the entire range of motion and stability during repeated opening and closing cycles.

As an element from the Window regulators and motors group, it works with the factory electrical installation and comfort control system, allowing for the preservation of the vehicle’s original functionality, including remote window closing (if present in the car’s specific configuration).

Benefits of using an original mechanism

Using a dedicated rear left window lifter in an Audi A4 Cabrio allows you to:

• maintain the correct line and position of the window relative to the seals and the folding roof,
• minimize the risk of jamming, skipping, or uneven window movement,
• ensure stable cooperation with the factory window lift motor,
• reduce cabin noise resulting from improper window closure.

Thanks to the preservation of the original design, installation is predictable, and the mechanism, once the guides and end positions are correctly set, can operate in a repeatable and trouble-free manner.

Condition and practical application

The offered item is in used condition, which allows for an economical repair of the window system while maintaining the manufacturer’s original specifications. This is a good solution both for typical mechanism failures and for comprehensive renovation of the side body area in a convertible when you want to maintain the factory character of the vehicle.

Compatibility and part selection

Before purchasing, it is worth verifying the compatibility of the mechanism with the specific equipment version of your Audi A4 B6/B7 Cabrio, especially regarding the mounting side (rear, left) and body type (convertible). In case of doubt, comparing the construction of the old lifter with the offered item and checking the part number in the product’s technical specification will be helpful.

If you are planning a comprehensive repair or modernization of the side window and roof area in your Audi and need other elements from the same group, such as guides, lift motors, or complete window mechanisms, check the available parts in the Audi Window regulators and motors category.

When working with used body elements and window mechanisms, it is worth knowing the typical operational problems of modern cars – a practical look at repair costs and possible faults can be found in the article BMW E90 faulty motors: check what can ruin your budget!, which helps in better planning service and expenses related to car maintenance.