Mercedes W639 Sliding Door Window Seal is a precisely fitted component from the door seals category, designed for the rear sliding door window in Mercedes Vito/Viano W639 models. It ensures a watertight seal for the window in its guide, reduces noise, and protects the interior from water and dirt. Thanks to its factory geometry, it's a practical solution for body repairs and restoring proper sliding door functionality.
Specifications and technical data
- SKU: A6396711420
- Mark: Mercedes (Genuine OE)
- Condition: Used
- OEM Part Number: A6396711420
- Substitutable numbers: A6396711420, A 639 671 14 20
- Location on the vehicle: Rear, Right, Left
- Category: Door Seals
Vehicle Application and Placement
This seal is specifically designed for the sliding doors of the Mercedes W639, intended for the rear part of the vehicle body. Its design allows for installation on both the right and left sides, simplifying part selection during vehicle servicing.
Vehicle placement includes:
- the rear body area around the sliding door,
- the right side – for the sliding door on the passenger side,
- the left side – for the sliding door on the driver's side (in versions with additional doors).
Technical and Functional Characteristics
As an original Mercedes part, the sliding door window seal maintains the correct profile, flexibility, and shape to fit the window frame and door structure. Properly contoured edges ensure stable glass seating and proper interaction with the sliding mechanism.
Key functions of the seal:
- preventing water and moisture from entering the interior,
- reducing wind noise while driving,
- stabilizing the window in the sliding door guide,
- protecting the window edges from mechanical damage.
By maintaining its correct geometry, the seal supports the proper closing of the sliding doors and helps eliminate unwanted window vibrations.
Product Condition and Benefits of Using a Used Part
The offered seal is a used part, allowing for economical repairs while maintaining the original manufacturer's specifications. In practice, this means restoring the proper sealing of the sliding doors without the need to invest in expensive aftermarket replacements.
Using an original, used sliding door window seal for the Mercedes W639 offers:
- better fit to the window frame compared to many aftermarket alternatives,
- preservation of the original body line and proper operation of the sliding mechanism,
- reduced risk of leaks after installation.
Selection and Compatibility within Mercedes Door Seals
When selecting this part, pay attention to its compatibility with the specific W639 body version and the side of installation. This seal is part of the door seals group, intended for use in sliding doors, not in front or rear hinged doors. This ensures the correct length, profile, and mounting method in the car body.
If you are looking for other Mercedes door seals from the same product group, check the Mercedes door seals available in our store to select complete sealing kits for your vehicle.
Practical Application and User Comfort
Replacing a worn sliding door window seal in the Mercedes W639 directly impacts the comfort of daily vehicle use. A properly selected part helps to:
- reduce cabin noise at higher speeds,
- limit window fogging caused by moisture ingress,
- protect the interior from water during heavy rain or car washes.
For users who are simultaneously upgrading their cabin, other interior trim elements may also be useful. You can find inspiration in this regard in the article Car Interior Tuning with Global Parts, which describes practical ways to use used components to improve interior ergonomics and appearance.
Summary
The Mercedes W639 Sliding Door Window Seal is a functional body component from the door seals group, designed for the rear of the vehicle, with the possibility of installation on the right or left side. Choosing an original, used seal allows for restoring proper sliding door sealing, improving cabin acoustics, and protecting the interior from moisture, while maintaining compatibility with the original Mercedes W639 construction.
