Audi A4 B8 Rear Quarter Window Triangle Glass Right O/S Glass AS2 8K5845300F

Audi A4 B8 Rear Quarter Window Triangle Glass Right O/S Glass is a precisely fitted body component designed for installation in the rear, right-hand section of the vehicle. As part of the Car windows group, it ensures proper interior illumination, structural stability of the side body zone, and an aesthetic finish to the vehicle's side profile. Using this component allows for an economical yet professional vehicle repair without the need for more expensive replacements.

Specifications and technical data

• SKU: 8K5845300F
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K5845300F
• Substitutable numbers: 8K5845300F, 8K5 845 300 F
• Location on the vehicle: Rear, Right
• Part type: Rear Quarter Window
• Category: Car Glass

Purpose and fitment for Audi bodywork

The described rear quarter window is designed specifically for the Audi A4 B8 model, taking into account the characteristic geometry of the side body section. Its placement in the rear – right side area means that the component works in conjunction with the door frame and seals in this specific zone, which is important for both the vehicle's seal and aerodynamics.

The precise fit of the glass shape and thickness allows for the preservation of the factory side line, as well as proper interaction with moldings, seals, and other windows in the vehicle. As a result, there are no unwanted stresses or leaks after replacement that could affect the cabin's acoustic comfort.

Technical characteristics of AS2 glass

Glass marked with the AS2 class meets the requirements for mechanical strength and light transmission intended for side and rear windows. The appropriate material structure ensures:

• dimensional stability under varying temperature conditions,
• adequate resistance to stresses resulting from bodywork operation,
• safe behavior in the event of damage (controlled breakage pattern).

Thanks to this, the window works correctly within the body frame without causing additional loads on seals and mounting elements. The correct glass class is also important for compliance with regulations and for maintaining daily vehicle usage comfort.

Condition of the component and benefits of choosing used parts

The offered rear quarter window comes from an operated vehicle, which allows for cost-effective restoration of the side body zone. A used component of this type is particularly attractive in situations where replacement is necessary due to a collision, parking damage, or cracking resulting from stress.

Choosing a second-hand part is a solution that:

• reduces repair costs while maintaining the original geometry of the element,
• allows for maintaining a consistent look of the side window line,
• supports a more sustainable approach to vehicle operation through the reuse of functional components.

If you want to better understand how to safely and consciously use used body and glazing components, it is worth reading an article discussing the most common concerns and facts about them: Used car parts: myths and facts you need to know.

Function in vehicle construction and assembly aspects

The rear quarter window in the Audi A4 B8 plays an important role in stiffening the side part of the body and ensuring proper visibility in the rear zone. A correctly installed component:

• stabilizes the window frame in the rear part of the vehicle,
• limits the penetration of noise and moisture into the interior,
• affects the comfort of passengers sitting in the back through additional cabin illumination.

Due to the specific placement on the vehicle, installation should be performed in accordance with procedures regarding surface preparation, application of adhesive or seals, and checking for proper adhesion. Proper seating of the window has a direct impact on the durability of the repair and the absence of subsequent leakage problems.

Expanding repairs within Audi windows

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