Audi A4 S4 RS4 8H B7 Rear Door Window Regulator Motor Left N/S 8H0959801A

Audi A4 S4 RS4 8H B7 Rear Door Window Regulator Motor Left N/S is an original component from the Window regulators and motors group, designed for precise operation of the rear left window in Audi bodywork. This used OEM component ensures a proper fit with the factory electrical installation and correct cooperation with the window regulator mechanism, resulting in stable and predictable system performance.

Specifications and technical data

• SKU: 8H0959801A
• Mark: Audi
• Condition: Used
• OEM Part Number: 8H0959801A
• Substitutable numbers: 8H0959801A, 8H0 959 801 A
• Location on the vehicle: Rear, Left
• Part type: Window Motor
• Category: Window Motors & Regulators

Purpose and vehicle placement

The presented motor is dedicated for installation in the rear left window area, in the rear passenger door. It is responsible for driving the window regulator mechanism, enabling smooth raising and lowering of the window from the door control panel or the driver's console. Thanks to the correct orientation for the specific mounting location, the proper operating geometry and stable mounting within the door structure are maintained.

Technical and functional characteristics

The window regulator motor operates within the vehicle's electrical system, providing the appropriate torque to operate the window under typical operating conditions. The OEM design is optimized for:

• proper cooperation with the factory window regulator mechanism,
• compatibility with the door control installation,
• stable operation within the typical range of operating loads.

By using an original solution, consistency with the vehicle's comfort system is maintained, and the response to signals from the control buttons remains predictable and repeatable.

Benefits of using an original motor

Using an original window regulator motor in an Audi allows for maintaining the factory operating parameters of the window opening system. Key advantages include:

• secure fit to the door and mountings without the need for modifications,
• maintaining the correct direction and range of window movement,
• consistency with factory controls and electrical protections,
• reducing the risk of improper window operation after component replacement.

For the user, this means predictable system operation, the absence of unwanted noises resulting from misalignment, and stable performance in daily use.

Application in service practice

The rear left window regulator motor is a typical component replaced in case of problems with window movement, stopping halfway through the range, or lack of response to controls. Replacing it with an original component allows for restoring full system functionality without interfering with other door elements. When selecting parts, it is worth verifying compatibility with the vehicle using the OEM number or VIN, which minimizes the risk of installing an incorrect variant.

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

Product condition and selection of used components

The offered motor is a used component, which in service practice often represents a beneficial compromise between repair cost and maintaining the manufacturer's original specification. In the case of electrical components, choosing parts of factory origin is particularly important due to compatibility with the vehicle's installation and predictable operating parameters.

If you want to better understand how to safely and consciously choose used drive and control components, including elements selected by OEM numbers, the expert guide Why it is worth buying used gearboxes and engines – facts instead of myths, which discusses practical verification and selection procedures, will be helpful.

Additionally, choosing original used components aligns with an approach that reduces the consumption of raw materials and energy. You can find more on this topic in the article Sustainable automotive: How buying original used parts reduces carbon footprint and protects the environment?, which describes the environmental impact of reusing parts.