Audi A4 B7 Convertible Rear Quarter Side Window Glass Left N/S AS2 8H0845299

Audi A4 B7 Convertible Rear Quarter Side Window Glass Left N/S AS2 is an original body component designed for the rear left side of the cabin in the convertible version. Thanks to its factory-fit design, the glass works seamlessly with the window lifting and lowering mechanism, ensuring tightness, stability, and an aesthetic finish for the vehicle's side area. It is a practical solution for users who want to restore the proper operation of the side glazing after damage or wear of the previous component.

Specifications and technical data

• SKU: 8H0845299
• Mark: Audi
• Condition: Used
• OEM Part Number: 8H0845299
• Substitutable numbers: 8H0845299, 8H0 845 299
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Purpose and body fitment

The rear quarter side window glass has been designed specifically for the Audi A4 B7 Convertible model, taking into account the characteristic frameless body construction. The component is mounted in the rear left part of the vehicle, working in conjunction with the factory guide and seal mechanism. This maintains the correct window geometry, which reduces the risk of leaks, rattling, or excessive vibrations while driving.

The AS2 marking indicates the appropriate glass grade, adapted for use in automotive side windows. This ensures proper transparency, resistance to mechanical damage, and compliance with homologation requirements for this type of component.

Function in the Window Regulators and Motors system

Although the glass is a glass component, it operates directly within the Window Regulators and Motors system, where it interacts with guides, the lifter, and seals. A properly selected glass:

• ensures smooth movement in the guides without excessive resistance,
• enables the correct operation of the motor and regulator without overloading,
• reduces the risk of the mechanism jamming when raising or lowering the window,
• maintains proper pressure against the seals, which affects acoustic comfort.

By maintaining factory dimensional parameters and shape, the glass integrates with the existing installation, which facilitates assembly and minimizes the need for additional mechanism adjustments.

Performance characteristics and benefits of installation

Replacing a damaged or scratched side window with an original component allows you to restore the aesthetics of the side body line and improve driving comfort. The newly installed glass:

• stabilizes airflow in the cabin with the roof open,
• reduces wind noise at higher speeds,
• ensures a consistent look with the vehicle's other windows,
• supports the proper operation of seals and the lifting mechanism.

The component is sourced from dismantling, which allows for maintaining the original manufacturer's specification while reducing repair costs. This solution is particularly beneficial for comprehensive renovation of the side body area in a convertible, where precision of fit has a direct impact on tightness and comfort.

Part selection by numbers and technical aspects

When selecting a rear quarter side window for an Audi, it is worth using the OEM part number and interchangeable numbers to ensure that the component will be compatible with the specific body version and model year. In case of doubt, it is helpful to compare the markings on the old glass or consult a mechanic who will verify compatibility with the guide system and window regulator.

If you are interested in a broader context of selecting used components by catalog and OEM numbers, it is worth reading an expert guide describing part selection procedures, including power units and drivetrain components – you will find it in the article Why it is worth buying used gearboxes and engines – facts instead of myths.

Audi Window Regulators and Motors – expansion and service of the side area

If you are planning a comprehensive repair or upgrade of the side window area in your Audi and need other components from the same group, such as guides, lifters, or electric drives, check the available parts in the Audi Window Regulators and Motors category.

With rising service costs, it is also worth considering the wider use of used OEM components in body and window mechanism repairs – practical tips on how to do this consciously and safely can be found in the guide Rising repair costs and the boom in used parts – how to save on car service?.