Audi TT 8N Mk1 Coupe Window Quarter Glass AS2 Rear Left N/S 8N8845299C

Audi TT 8N Mk1 Coupe Window Quarter Glass AS2 Rear Left N/S is a precision-fit body component designed for installation in the rear section on the driver's side. As a part of the Car Windows group, it ensures proper interior illumination, structural stability of the body, and compliance with the AS2 glass standard, which translates to safe vehicle operation.

Specifications and technical data

• SKU: 8N8845299C
• Mark: Audi
• Condition: Used
• OEM Part Number: 8N8845299C
• Substitutable numbers: 8N8845299C, 8N8 845 299 C
• Location on the vehicle: Rear, Left
• Category: Car Glass

Application and fitment for Audi TT 8N Coupe

The presented side window is designed for the coupe body style of the first-generation Audi TT (8N designation) and is installed in the rear section on the left side. It is responsible for properly sealing the side area of the body, working in conjunction with seals, the door frame, and the side panel. Thanks to the factory edge profile and the correct bending radius, the glass maintains the proper body line and does not cause stress on the chassis.

This component is particularly important for post-collision repairs, replacing corroded or damaged sections of the side body, and for vehicle restoration where the original glass has cracked or become clouded. Precise fitment to the specific model reduces the risk of leaks and installation issues.

AS2 glass characteristics and function in the body

Glass marked with the AS2 class meets the requirements for light transmission and mechanical resistance for side and rear windows. In practice, this means an appropriate balance between visibility, thermal comfort, and glare protection. The quarter glass in the Audi TT 8N Coupe stabilizes the rear pillar area, contributing to a rigid body structure and reducing vibrations while driving.

Properly selected glass:

• ensures correct adhesion to seals and body components,
• minimizes the risk of wind noise at higher speeds,
• maintains the factory styling line of the side body,
• allows for trouble-free vehicle use in various weather conditions.

Used condition and benefits of choosing OEM parts

The offered window comes from dismantling and is sold as a used part, which allows for maintaining original glass parameters while reducing repair costs. Compared to aftermarket replacements, the OEM component retains the factory shape, thickness, and optical characteristics, which is particularly important in a sports coupe body where the fitment of elements has a direct impact on aesthetics and tightness.

For body shops and service centers specializing in the Audi brand, choosing an original quarter glass means fewer installation adjustments and faster repair completion. Using OEM parts also facilitates maintaining the visual consistency of the vehicle after repair.

Practical installation tips

When replacing the rear left side window in an Audi TT 8N Coupe, it is recommended to:

• thoroughly clean the contact surface on the body from old adhesive residue and dirt,
• verify the condition of the seals and replace them if they are brittle or deformed,
• check the geometry of the mounting opening after body repairs to avoid stress on the glass,
• use appropriate adhesives and primers designed for automotive glass installation.

Professional installation allows for maintaining body tightness, reducing the risk of cracks resulting from improper seating, and ensuring long-term, trouble-free operation.

Repair expansion and additional materials

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

When planning your body repair and window replacement budget, it is worth knowing which consumable parts in the car most often require intervention. You can find practical advice in the article TOP 10 most frequently replaced parts in your car, which will help you better plan your service and avoid unnecessary costs.