Audi A3 8P Cabrio Window Regulator Lifter Motor Rear Left N/S 8P7839397E

Audi A3 8P Cabrio Window Regulator Lifter Motor Rear Left N/S is an original component from the Window regulators and motors group, designed for the rear left window in the convertible body style. It ensures stable window guidance and proper integration with the factory control system, which translates into comfortable and trouble-free vehicle operation.

Specifications and technical data

• SKU: 8P7839397E-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 8P7839397E
• Substitutable numbers: 8P7839397E, 8P7 839 397 E, 8P7959811B, 8P7 959 811 B
• Location on the vehicle: Rear, Left
• Part type: Regulator & Motor Assembly
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The presented mechanism is dedicated to the rear left part of the body, where it is responsible for the smooth raising and lowering of the window in the Audi A3 8P Cabrio. A correctly selected component in this area is crucial for:

• maintaining the proper geometry of the window in the guides,
• ensuring cabin tightness when the window is closed,
• stable operation of the electric window control system,
• reducing noise and vibrations while driving with the window up. Thanks to a design consistent with Audi factory standards, the mechanism works with the original mounts and electrical installation, which facilitates installation and subsequent operation.

Construction and technical fitment

The window regulator belongs to the Window regulators and motors group, meaning it has been designed for precise cooperation with the vehicle's window control system. The construction provides for:

• appropriate placement of mounting points to the door structure/rear panel,
• maintaining the correct range of window movement throughout the entire travel path,
• compatibility with factory guide and sealing elements. The location on the vehicle in the rear left part of the body has been precisely defined, which minimizes the risk of error when selecting parts and allows for efficient repair.

Benefits of using an original mechanism

Using an original Audi solution in the rear window area of a convertible brings a number of practical benefits:

• Factory fitment – maintaining compatibility with the door structure and window control system, without the need for modifications.
• Stable system operation – reducing the risk of jamming, uneven window movement, or excessive play in the guides.
• Consistency with other body elements – proper window closing affects acoustic comfort and protection of the interior from external conditions. This solution is particularly recommended for repairs after mechanical damage, wear and tear, or problems with window operation in the rear left part of the vehicle.

Condition and practical application

The item comes from an Audi vehicle and is offered as a used part, which is a reasonable compromise between repair cost and maintaining the original technical specification. This type of component works great in:

• routine window system repairs after a mechanical failure,
• restoring full functionality of the rear window after a collision or interference with the bodywork,
• servicing vehicles where maintaining original design solutions is important. Thanks to maintaining the factory geometry and intended use for a specific mounting location, the mechanism allows for efficient restoration of proper window operation without interfering with the body structure.

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 guides, drives, or complete lifting assemblies, check out the available parts in the Audi window regulators and motors category.

More on the cost-effectiveness of used components

When planning a repair, it is worth considering the general principles of selecting used components for a car – in terms of quality, costs, and matching by manufacturer markings. This topic is discussed in more detail in the expert article Original, replacement, or used – which car parts are the most cost-effective?, which helps in making informed purchasing decisions, including for window regulator components. For users interested in a broader perspective on the use of used components in a vehicle, including the principles of selection by manufacturer markings and cost analysis of repairs, the guide Why it is worth buying used gearboxes and engines – facts instead of myths may also be useful, presenting a practical approach to using used elements in modern cars.