Audi RS4 B8 Rear Door Side Window Glass Tinted Left N/S AS3 8K9845205C

Audi RS4 B8 Rear Door Side Window Glass Tinted Left N/S AS3 is an original body component designed for the rear left side of the vehicle. The AS3-rated tinted glass provides increased optical comfort for passengers and a consistent look with the factory-fitted privacy glass package. It is a practical solution for users who want to maintain the original specification and aesthetics of their Audi.

Specifications and technical data

• SKU: 8K9845205C
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K9845205C
• Substitutable numbers: 8K9845205C, 8K9 845 205 C
• Location on the vehicle: Rear, Left
• Category: Car Glass

Purpose and body fitment

The presented window glass is designed specifically for installation in the rear left door of an Audi, ensuring it maintains the factory geometry and body lines. The vehicle placement is clearly defined, which facilitates part selection during post-accident repairs or when replacing damaged glass.

Thanks to a design that meets the manufacturer's requirements, the glass works seamlessly with factory guides, seals, and the window lifting mechanism, reducing the risk of closing issues, wind noise, or leaks.

Characteristics of AS3 tinted glass

The AS3 rating denotes glass with an increased level of tint, used in the rear section of the vehicle. This type of glass:

• reduces interior heating on sunny days,
• limits visibility into the interior from the outside, improving passenger privacy,
• helps protect upholstery and trim elements from excessive UV radiation.

Tinted rear glass is particularly valued in cars with a sporty character, such as the RS4 B8, where both functionality and a cohesive, dynamic look of the entire side body line are important.

Original origin and condition of the part

The glass comes from the original Audi production line, which translates to compliance with factory safety and quality standards. As a used component, it is a good choice for those who want to keep their car in an OEM configuration, avoiding random replacements with uncertain parameters.

Choosing an original used window allows for optimized repair costs while maintaining proper fitment to the body, the correct glass thickness, and compatibility with factory mounting elements.

Application in repairs and upgrades

The rear left side window is a key element in repairs following mechanical damage, break-ins, or side collisions. It is suitable both for standard replacement of damaged glass and for comprehensive reconstruction of the side body section.

If you are planning a more extensive vehicle repair and want to select more original parts in one place, it is worth checking out our guide: how to effectively source used car parts in one place. You will find practical tips on selecting OEM components and avoiding problematic replacements.

Why choose original Audi car windows

Using components from the Car windows category that come from the same brand as the vehicle minimizes the risk of mismatch and operational issues. The original rear left window:

• maintains the factory rigidity and tightness of the door structure,
• ensures proper operation with the window lifting system,
• helps maintain a uniform shade and level of tint across all rear windows.

For Audi RS4 B8 users, this is a solution that allows for combining reasonable repair costs with maintaining the consistent, factory character of the vehicle, without compromising on safety and driving comfort.