Audi A4 S4 RS4 B8 Dash Side Vent Air Duct Tube Line Channel Left N/S 8T2819655A

Audi A4 S4 RS4 B8 Dash Side Vent Air Duct Tube Line Channel Left N/S is an original ventilation system component responsible for precisely directing air to the side vent on the driver or passenger side. Thanks to its factory geometry and precise fit to the dashboard structure, it ensures stable airflow and proper operation of the air conditioning and heating systems without the need for modifications. It is a practical solution for post-collision repairs, replacing a damaged duct, or completing the interior after disassembly.

Specifications and technical data

• SKU: RHD-8T2819655A
• Mark: Audi
• Condition: Used
• OEM Part Number: 8T2819655A
• Substitutable numbers: 8T2819655A, 8T2 819 655 A
• Location on the vehicle: Left
• Category: Other Interior Parts & Accessories

Purpose and function of the component

The presented air duct is designed for installation on the left side of the dashboard in Audi A4, S4, and RS4 B8 generation models. Its task is to provide a sealed and directed flow of air from the main ventilation duct to the side air vent, which directly impacts thermal comfort in the cabin and even air distribution. The factory design ensures:

• proper fitment with adjacent dashboard components,
• stable mounting without the need for additional adapters,
• preservation of the original rigidity of the ventilation system.

Benefits of using the original air duct

Using an original air duct in an Audi allows you to maintain ventilation system consistency and avoid problems typical of ill-fitting replacements, such as leaks or unwanted vibrations. The component is structurally compliant with the factory dashboard design, which facilitates installation and reduces the risk of stress on the plastic. In practice, this means:

• easier installation during interior repairs or after dashboard disassembly,
• preservation of the original airflow geometry,
• lower risk of rattles and noise from the vent area while driving.

Condition and use in vehicle service

The offered component is a reclaimed part intended for reinstallation in a vehicle where the factory duct has been damaged, e.g., after a collision, interior system intervention, or improper dashboard disassembly. This type of used part is an economical service solution that allows for restoring full functionality of the ventilation system while maintaining the original design specifications. Due to its location within the dashboard structure, the air duct is a component that is not visible during daily use, but it is essential for the proper operation of the air conditioning and heating, which is why its correct fitment is important for both comfort and the overall performance of the system.

Integration with other Audi interior components

The duct works in conjunction with the side vent, the main dashboard support beam, and the central air distribution system. When replacing it, it is worth checking the condition of adjacent ducts, mounts, and the air vent grille to avoid future disassembly. In the case of extensive interior work, especially in S4 and RS4 models where modifications or repairs after intensive use are common, selecting the correct air duct is important for maintaining the factory character of the cabin. If you want to better understand the structural differences between the sporty RS versions and standard Audi models, including changes in the engine, brakes, and chassis, the following article will be helpful: Audi RS vs other models – what is hidden under the hood and chassis?.

Related components and system expansion

When performing comprehensive work on the dashboard, it is worth simultaneously verifying the condition of other ventilation ducts, soundproofing elements, and mounts to ensure stable and quiet operation of the entire system after reassembly. If you are planning a comprehensive repair or upgrade of the cockpit area in your Audi and need other components from the same group, such as air ducts, ventilation lines, or additional trim elements, check the available parts in the Other Audi category.

Summary

The Audi A4 S4 RS4 B8 Dash Side Vent Air Duct Tube Line Channel Left N/S is a practical choice for ventilation system repairs and for restoring the factory interior configuration after disassembly. Its original design, fit to the dashboard geometry, and direct installation capability make it a service-friendly and cost-effective solution, especially for vehicles that are heavily used or have undergone bodywork repairs.