Audi A4 B7 Window Lifter Rear Door Left N/S Regulator Mechanism 8E0839461C

The Audi A4 B7 Rear Left Window Regulator is an original part from the Window Regulators and Motors category, designed for the rear left window of the Audi A4 B7 generation. It ensures stable operation of the window lifting and lowering mechanism, contributing to user comfort, proper door closure, and cabin sealing.

Specifications and technical data

• SKU: 8E0839461C
• Mark: Audi
• Condition: Used
• OEM Part Number: 8E0839461C
• Substitutable numbers: 8E0839461C, 8E0 839 461 C
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Intended Use and Fitment for Audi A4 B7

The presented window regulator is specifically designed for installation on the rear left side of the vehicle in the Audi A4 B7 model. Correct placement on the vehicle guarantees proper window guidance in the tracks and correct interaction with the factory door hardware.

Thanks to a design consistent with solutions used by the Audi brand, the part retains the factory mounting geometry, which facilitates installation and reduces the risk of improper fit with door upholstery or seals.

Window Regulator Construction and Function

The window regulator is responsible for transferring power from the electric motor to the door window, ensuring smooth movement throughout its full range of operation. A properly functioning mechanism:

• maintains the window in a stable position, without play or vibrations during driving,
• ensures smooth lifting and lowering, without jamming or skipping,
• supports door sealing, which reduces noise and prevents moisture from entering the interior.

A correctly chosen window regulator is crucial for the proper operation of the window control system, both from the driver's panel and from the button in the rear door.

Benefits of Using an Original Audi Regulator

Using a part from the Audi OE family allows for operational parameters close to factory specifications. The main advantages include:

• consistency with the factory mounting system in the Audi A4 B7 doors,
• compatibility with the original window control motor,
• appropriately selected window guidance geometry, which reduces the risk of misalignment.

As a result, the rear left window regulator for the Audi A4 B7 is a practical solution for repairing the window mechanism after damage to cables, guides, or due to wear and tear.

Product Condition and Service Application

The part is offered as used, making it an attractive cost-effective alternative to new parts, while maintaining the functionality required for everyday use. This type of regulator is suitable for repairing a single damaged mechanism as well as for comprehensive door service when several components of the window lifting system need replacement.

Audi Window Regulators and Motors – Part Selection

If you are looking for other Audi Window Regulators and Motors compatible with your model, please use our dedicated subpage: Audi Window Regulators and Motors. There you will find a wide selection of mechanisms and drives for windows designed for various generations of this brand.

Service Knowledge and Fault Prevention

When diagnosing problems with door mechanisms, it is worth knowing the typical weak points of modern car designs. A good supplement to service knowledge can be an article dedicated to the powertrains of another popular brand, which discusses common failures and their financial consequences: Faulty BMW E90 Engines: Find Out What Can Ruin Your Budget!. This will allow you to better plan maintenance and repairs for your car as well.