Audi S4 B9 Rear Quarter Side Window Glass Glazing AS3 Left N/S 8W9845297J

Audi S4 B9 Rear Quarter Side Window Glass Glazing AS3 Left N/S is an original body glazing from the Car windows group, designed for installation in the rear part of the vehicle on the driver's side. This component ensures proper lateral body rigidity, correct interior illumination, and a consistent, factory-original look of the car's side profile.

Specifications and technical data

• SKU: 8W9845297J
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W9845297J
• Substitutable numbers: 8W9845297J, 8W9 845 297 J
• Location on the vehicle: Rear, Left
• Category: Car Glass

Purpose and fitment for Audi S4 B9

The presented glass has been designed specifically as a side rear quarter window for the Audi S4 B9 generation model. Its placement on the left rear side guarantees compatibility with the factory body geometry, which translates into a proper fit with seals, the window frame, and other side panel components.

Thanks to its construction compliant with the AS3 standard, the glass meets the requirements for light transmission and safety characteristic of tinted glazing used in the rear zone of the body. This solution improves passenger comfort by reducing interior heating and increasing privacy.

Performance parameters and role in body construction

The Audi S4 B9 rear quarter side window performs several important structural and functional roles:

• it stabilizes the side part of the body in the rear pillar area,
• it ensures proper visibility in the rear zone for the driver and passengers,
• it contributes to the styling line of the body characteristic of the S4 version,
• it influences interior acoustics through proper sealing of the passenger compartment.

A properly selected rear glazing reduces air turbulence around the pillar and improves acoustic comfort at higher speeds. The use of glass with parameters compliant with the AS3 standard also helps protect the interior from solar radiation.

Characteristics of the used component

The offered glass is a used component, sourced from dismantling, which allows for a reasonable cost while maintaining the original Audi manufacturer specifications. This type of component is a particularly beneficial choice for post-accident repairs or replacing damaged glass when the goal is to maintain the factory look and compatibility with existing seals and moldings.

Choosing an original glass from dismantling reduces the risk of fitment issues typical of aftermarket replacements with different geometry or glass tint. It is a practical solution for users who want to restore the vehicle to a factory-like condition without excessive budget strain.

Installation and service application

The Audi S4 B9 rear quarter side window is intended for installation in the rear part of the body on the driver's side, in the place of the factory glazing. Replacing this element requires following service procedures related to the removal of side upholstery, trim moldings, and seals, as well as the use of appropriate sealing materials.

Due to the nature of how glass functions within the body structure, installation in a workshop environment is recommended, using the proper tools and bonding or mounting technologies specified by the manufacturer. A correctly installed window restores the tightness, rigidity, and aesthetics of the side body section.

More items from the Audi Car windows category

If you are planning a comprehensive repair or upgrade of the side and rear glazing zone in your Audi and need other elements from the same group, such as door glass, quarter lights, or additional side glazing, check the available parts in the Audi Car windows category.

Learn more about used body parts

When choosing used glass, it is worth knowing the best practices related to assessing the condition of the glass, preparation for installation, and the impact of such parts on the final effect of body repair. A detailed discussion of this topic can be found in the article Replacing body parts with used ones – can body parts from dismantling look like new?, which will help you better plan bodywork and paint jobs and the selection of appropriate components.