Audi A4 B9 Front Side Window Glass Left N/S AS2 8W0845201

Audi A4 B9 Front Side Window Glass Left N/S AS2 is an original body component designed for installation on the driver's side of the Audi A4 B9 generation model. This used window glass from this series ensures the preservation of factory geometry, which translates into proper fitment with the door and stable operation of the window regulator mechanism. It is a practical solution for drivers who want to restore full functionality and safety of the side visibility zone after the original glass has been damaged.

Specifications and technical data

• SKU: 8W0845201
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W0845201
• Substitutable numbers: 8W0845201, 8W0 845 201
• Location on the vehicle: Front, Left
• Category: Car Glass

Purpose and fitment for Audi A4 B9

The presented window glass has been designed specifically for the front left door of the Audi A4 B9, ensuring it maintains the correct shape, bending radius, and glass thickness specified by the manufacturer. Its placement in the front – left side of the vehicle zone guarantees compatibility with factory guides, seals, and the door frame, which facilitates installation and reduces the risk of leaks.

The AS2 marking indicates the use of glass with appropriate light transmission parameters and mechanical resistance, compliant with the requirements for side windows in modern passenger cars. As a result, the glass maintains the proper balance between driving comfort and protection against external factors.

Technical characteristics of AS2 glass

AS2 type glass used in side windows provides:

• adequate light transmission, improving mirror clarity and visibility of the surroundings,
• controlled impact resistance during daily use,
• a safe breakage pattern, reducing the risk of serious injury in the event of a collision.

By maintaining factory parameters, the glass works in harmony with original body components, which promotes stable operation of the window regulator mechanism and proper pressure against the seals. This is important both from the perspective of interior acoustics and protection against water or contaminants.

Benefits of using original used window glass

Choosing a used side window for an Audi allows you to maintain the factory parameters of the part while reducing repair costs. Original glass from dismantling usually fits the body lines better than random aftermarket replacements, which is significant for the precise adjustment of doors and guides.

The main advantages of this solution include:

• factory fitment for the Audi A4 B9 model,
• preservation of the original optical characteristics of the glass,
• the ability to restore full door functionality after glass damage,
• a reasonable compromise between quality and repair cost.

If you want to further verify the compatibility of the part with the specific equipment version of your car, it is worth using the VIN and part number. Practical tips can be found in the article Guide: how to choose the right car part by VIN and OEM number, which describes the compatibility checking process step by step.

Part selection and purchase support

Before purchasing a side window for an Audi A4 B9, it is worth ensuring that the body configuration and door version correspond to those used in your vehicle. It is helpful to compare the shape of the glass, the top edge line, and the method of attachment to the window regulator.

If you are considering different repair strategies – between original, aftermarket, and used parts – it may be useful to compare costs and parameters in a broader context. A detailed discussion of this topic can be found in the material Original, aftermarket, or used – which car parts are the most cost-effective?, where quality and installation differences are presented.

If you are planning a wider range of work on the body and glazing, it is worth browsing other elements available in the Audi car windows category to select a set of parts that are technically and visually consistent.

Summary of side window application

Audi A4 B9 Front Side Window Glass Left N/S AS2 is a practical solution for drivers who want to restore full functionality of the front left door after glass damage. Its original origin, fitment for the specific model, and AS2 glass parameters promote trouble-free installation and the preservation of driving comfort. It is a reasonable choice for post-accident and maintenance repairs, where both technical correctness and cost control are important.