Audi S3 8Y Rear Door Seal Weatherstrip Outer Trim High Gloss Left N/S 8Y0839475E

Audi S3 8Y Rear Door Seal Weatherstrip Outer Trim High Gloss Left N/S is a precisely fitted body component designed for the rear left window area. It is responsible for effectively draining water from the glass surface and guiding it stably within the channel, which translates into quiet operation of the window regulator mechanism and protection of the interior against moisture. As part of the Window seals and trims group, it is an important component of the Audi side window sealing system.

Specifications and technical data

• SKU: 8Y0839475E
• Mark: Audi
• Condition: Used
• OEM Part Number: 8Y0839475E
• Substitutable numbers: 8Y0839475E, 8Y0 839 475 E
• Location on the vehicle: Rear, Left
• Category: Window Seals, Gaskets & Trims

Function and application of the weatherstrip seal

The window weatherstrip seal on the rear left side of the body is responsible for several key operational tasks:

• controlled wiping of water and debris from the glass surface during movement,
• limiting the ingress of moisture into the door interior and cabin,
• stabilizing the glass in the guide during opening and closing,
• reducing wind noise in the rear body area.

Thanks to its proper profile and flexibility, the seal rubber works with the edge of the glass, ensuring consistent sealing during every cycle of the window regulator.

Construction and fitment for Audi S3 8Y

The presented seal has been designed specifically for the rear left window of the Audi S3 8Y generation, which means its geometry, length, and shape are adapted to the factory door contour. The appropriate profiling of the working edge allows for even pressure against the glass, and the support structure of the seal enables correct seating in the designated place on the door panel.

Such fitment translates into:

• easier installation without the need for modifications,
• visually consistent contact between the glass and the body line,
• maintaining the factory character of the side bodywork.

Material and performance characteristics

The rubber construction of the seal is designed to work in variable weather conditions – from low temperatures to a heated body. The flexible material is intended to maintain a seal during multiple window opening cycles while not causing excessive resistance to the regulator mechanism.

In practice, this means:

• reducing the risk of window fogging from the rear of the cabin,
• lower load on the mechanical components of the regulator,
• more stable glass guidance at higher driving speeds.

As an element from the Window seals and trims category, the seal contributes to a complete water and noise protection system in the side body area.

Product condition and benefits of installation

The offered seal is a used part, which in practice allows for an economical replacement of a worn or damaged component while maintaining the correct fit for the specific Audi model. Replacing a worn weatherstrip seal is particularly recommended when symptoms such as increased noise in the rear window area, traces of water on the door upholstery, or uneven glass guidance appear.

Choosing the right seal for the rear left side of the vehicle allows you to:

• restore the proper tightness of the side window,
• reduce wind noise in the rear of the cabin,
• limit the risk of corrosion inside the door caused by excess moisture.

Complementary Audi window seals and trims

If you are planning a comprehensive repair or upgrade of the window area in your Audi and need other elements from the same group, such as additional guide seals, trim strips, or upper window edge seals, check the available parts in the Audi window seals and trims category.

For drivers interested in optimizing vehicle maintenance costs and making informed parts choices, it is also worth checking out practical tips on economical operation, available in the article Economical operation of a Ford – where to look for the greatest savings in mechanical and body repairs, which shows how planning repairs and selecting the right components can translate into real savings for other brands as well.