Audi A5 S5 8T Rear Door Bung Plug Rubber Seal Cap Trim 8T8839453

Audi A5 S5 8T Rear Door Bung Plug Rubber Seal Cap Trim is a precision component from the Door upholstery group, designed to effectively seal the rear part of the vehicle body. It is responsible for limiting the ingress of moisture and contaminants into the door area, which supports the durability of the paneling and the acoustic comfort of the interior.

Specifications and technical data

• SKU: 8T8839453
• Mark: Audi
• Condition: Used
• OEM Part Number: 8T8839453
• Substitutable numbers: 8T8839453, 8T8 839 453
• Location on the vehicle: Rear
• Part type: Door Panel
• Category: Door Panels

Purpose and technical function

The presented sealing plug is dedicated to the rear part of the vehicle, where it operates under demanding service conditions. Its task is to:

• seal technological openings within the rear door area,
• protect the interior of the structure against water, mud, and road salt,
• stabilize selected door upholstery elements,
• limit the formation of corrosion in the sill-door zone.

Thanks to the appropriately selected elasticity of the rubber, the plug fits well into the mounting socket, ensuring a tight and repeatable fit after each disassembly and reassembly.

Construction and material properties

The plug is made of durable rubber material, adapted to work in variable temperatures and in contact with water and road contaminants. The material structure has been selected to:

• maintain a stable shape under long-term pressure,
• retain flexibility to facilitate installation in the sheet metal opening,
• minimize the risk of cracking under typical operational loads.

Such parameters contribute to maintaining tightness in the door zone, which translates into better protection of the upholstery and structural body elements.

Integration with rear door upholstery

As an element from the Door upholstery group, the plug works with the inner and outer paneling, complementing the factory sealing system. When properly installed, it:

• limits water ingress behind the upholstery panel,
• supports the maintenance of the proper microclimate within the rear part of the cabin,
• helps maintain the aesthetics and functionality of the upholstery for a longer time.

By maintaining the original mounting geometry, the plug allows for service replacement without interfering with the door structure, which facilitates work for workshops and individuals servicing the vehicle themselves.

Performance characteristics of the used element

The offered sealing plug comes from disassembly, which allows for maintaining the factory fit to the Audi body. A used element of this type is particularly beneficial where the following are important:

• compatibility with the original mounting system,
• preservation of operating parameters provided by the manufacturer,
• economical repair of the door zone while maintaining appropriate quality.

Replacing a worn or damaged plug with an original equivalent helps restore the proper tightness of the rear body section without the need for costly modifications.

Expanding Audi door upholstery modernization

If you are planning a comprehensive repair or modernization of the door zone in your Audi and need other elements from the same group, such as upholstery panels, covers, or additional seals, check the available parts in the Audi door upholstery category.

When planning broader service work, it is also worth taking care of the efficiency of the braking system – the guide article Second-hand braking system: how to safely choose discs, calipers, and ABS? will help in selecting used components, containing a practical checklist useful when shopping in used parts stores.