Audi A4 B6 B7 Door Window Lifter Motor Regulator Rear Left N/S 8E0959801A

Audi A4 B6 B7 Door Window Lifter Motor Regulator Rear Left N/S is an original component from the Window regulators and motors group, designed for operating the rear left window in the Audi A4 B6/B7 generation body. This used motor ensures factory-fit, proper compatibility with the electrical system, and stable operation of the window lifting and lowering mechanism.

Specifications and technical data

• SKU: 8E0959801A
• Mark: Audi
• Condition: Used
• OEM Part Number: 8E0959801A
• Substitutable numbers: 8E0959801A, 8E0 959 801 A
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The presented window lifter motor operates in the rear left door area, responsible for driving the window lifting and lowering mechanism. It is a component that works with the factory comfort control system, ensuring the correct window movement speed, smooth operation, and responsiveness to signals from the door buttons and the driver's panel.

The vehicle placement is precisely defined as rear – left side, which facilitates accurate part selection and eliminates the risk of installation errors. Using a dedicated motor in this location helps maintain the correct geometry of the guide rails and reduces mechanical stress on the entire system.

Construction and fitment for Audi A4 B6/B7

The motor has been designed specifically for the Audi A4 B6/B7 platform, which translates into the correct placement of mounting points, the appropriate housing shape, and a compatible electrical connector. As a result, installation is straightforward, with no need for wiring modifications or interference with the door structure.

Key design features include:

• dedicated mounting for the factory window regulator frame,
• an electrical connector designed for Audi, ensuring proper contact and communication with the vehicle's wiring,
• a housing adapted for operation inside the door, under varying temperature and humidity conditions.

This solution allows for consistency with the manufacturer's original design and reduces the risk of improper window operation after replacing the component.

Benefits of using an original motor

Using an original window lifter motor in an Audi A4 B6/B7 offers a number of practical operational benefits. The most important ones are:

• factory fitment – no need for adaptation, drilling additional holes, or modifying the wiring harness,
• consistent operation with comfort and window control modules,
• maintenance of correct window movement speed and smoothness,
• reduction of noise and vibration during mechanism operation.

The used component allows for an economical repair of the window system while maintaining parameters close to factory specifications, which is particularly important for vehicles used on a daily basis.

Part selection by OEM numbers and workshop practice

For components such as a window lifter motor, correct identification by OEM catalog numbers and interchangeable numbers is crucial. This helps avoid installing an incorrect variant, which could differ, for example, in electrical configuration or operating characteristics.

For users and workshops that want to deepen their knowledge on the safe selection of used components based on catalog numbers, verification procedures, and real cost savings, we recommend our expert guide: Why it is worth buying used gearboxes and engines – facts instead of myths. The principles of selection by OEM and VIN numbers contained therein can also be applied in practice to other subassemblies, including window system components.

Audi window regulators and motors – expansion and repairs

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

Summary

Audi A4 B6 B7 Door Window Lifter Motor Regulator Rear Left N/S is a practical solution for users who want to restore full functionality to the rear left window while maintaining the factory installation standard. The original design, fitment for the specific model, and the possibility of economical repair make it a sensible choice for both workshops and individual users looking for a proven component for their Audi.