Audi RS4 B8 Rear Quarter Window Glass Right O/S AS3 8K9845300E

Audi RS4 B8 Rear Quarter Window Glass Right O/S AS3 is an original component from the Car windows group, designed for installation on the right side of the rear bodywork. Thanks to its factory-fit design, it ensures proper seating geometry, airtightness, and compliance with AS3 standard requirements, which translates into comfort and safety during use.

Specifications and technical data

• SKU: 8K9845300E
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K9845300E
• Substitutable numbers: 8K9845300E, 8K9 845 300 E
• Location on the vehicle: Rear, Right
• Category: Car Glass

Purpose and body fitment

The presented rear quarter window glass has been designed specifically for installation in the rear, right side of the Audi RS4 B8 body. The appropriate edge profiling and correct glass thickness allow for precise seating in the body frame, which reduces stress and the risk of cracks during operation.

Its placement in the rear zone affects the structural stability of the side bodywork, as well as proper illumination of the vehicle interior. The use of glass with parameters compliant with AS3 supports cabin acoustic comfort and improves passenger protection.

Technical characteristics of AS3 glass

Glass marked with the AS3 class belongs to a group of windows with increased requirements regarding radiation filtration and resistance to mechanical damage. In practice, this means:

• controlled light transmittance, adapted for use in the rear zone of the vehicle,
• increased resistance to scratches and typical operational loads,
• a safe breakage pattern, limiting the risk of sharp edges.

Thanks to these properties, the window supports stable interior conditions, improving driving comfort on longer routes and in intensive urban conditions.

Benefits of using original Audi glass

Choosing an original side window for an Audi translates into a number of practical advantages. The most important of these are:

• Factory fit – maintaining the correct body geometry, airtightness, and compatibility with seals and mounting strips.
• Visual consistency – uniform shade and glass structure in relation to other windows in the vehicle, which is important for both aesthetic and practical reasons.
• Stable performance parameters – predictable window behavior in terms of noise dampening, light filtration, and resistance to temperature changes.

An element from the Car windows group of this type is particularly recommended for post-accident repairs and for replacing damaged windows in vehicles driven dynamically.

Condition of the item and assembly aspects

The offered rear quarter window glass is a used item, which in practice means maintaining the original specification while optimizing repair costs. This type of component allows for the restoration of full functionality of the side glazing zone without the need for interference with the body structure.

During installation, it is recommended to use appropriate seals, strips, and adhesive compounds consistent with the vehicle manufacturer's technology. Proper surface preparation and adherence to the curing time of mounting materials are crucial for the tightness and durability of the connection.

OEM safety and additional information

The use of original windows in an Audi has a direct impact on the vehicle's passive safety, body rigidity, and the correct operation of passive systems. It is worth paying attention to the component's compliance with the manufacturer's documentation and maintaining the correct sequence of work during replacement.

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

To better understand why original glass components are a beneficial choice in terms of durability and safety, it is worth reading the article Quality assurance and OEM safety – why are used original car parts the best choice for your car?, which discusses in detail the advantages of using OEM parts in everyday operation.