Mercedes S204 Door Seal Gasket Rear Left Right N/O/S Weatherstrip A2046970351

Mercedes S204 Rear Left Right Door Seal is an original part from the door seals category, designed for installation on the rear axle of the vehicle on the left or right side. The carefully designed sealing profile helps to reduce noise, improve cabin acoustics, and protect the interior from moisture and dirt.

Specifications and technical data

• SKU: A2046970351
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2046970351
• Substitutable numbers: A2046970351, A 204 697 03 51, BG
• Location on the vehicle: Rear, Right, Left
• Category: Door Seals

Intended Use and Vehicle Placement

This seal has been developed for use on the rear of the body, with the possibility of installation on both the left and right sides. This solution simplifies the selection of the correct part during servicing and allows for a consistent restoration of the factory sealing system throughout the rear of the vehicle.

Thanks to its precise fit to the specific body line of the S204 series estate, the seal works in conjunction with the door and body structure, ensuring proper adhesion around the entire perimeter. The appropriately selected cross-sectional geometry supports stable seating on the door edge, which reduces the risk of leaks during operation.

Technical and Functional Characteristics

This seal belongs to the group of body components responsible for maintaining the airtightness of the passenger cabin. Its functions include:

• limiting the penetration of water and moisture into the vehicle's interior,
• reducing wind noise at higher speeds,
• dampening minor vibrations between the door and the body,
• stabilizing the door's position at the contact point with the body.

As an element from the original Mercedes production line, this seal maintains a precise fit to the shape of the door frame and factory mounting points. This allows for installation without the need for modifications, preserving the operational characteristics intended by the manufacturer.

Item Condition and Service Application

The rear left/right door seal is a used part, making it an attractive option for routine repairs where maintaining the original construction at a reasonable service cost is a priority. This type of component is particularly suitable for situations where the existing seal has become worn, mechanically damaged, or deformed due to prolonged use.

Using an original seal from the same model series helps maintain the technical integrity of the body, which is important for both driving comfort and future resale value. A correctly chosen part also helps to reduce the risk of window fogging and the occurrence of unwanted noises when closing the doors.

Benefits of Using an Original Door Seal

Choosing a component like the Mercedes S204 Rear Left Right Door Seal is a beneficial solution for users who expect predictable installation and the preservation of factory body parameters. Key advantages include:

• factory fit to the geometry of the door and body,
• consistency with other seals in the vehicle,
• suitability for use in accident repairs and routine maintenance,
• maintenance of acoustic comfort and interior protection at a level close to factory standards.

With this part, you can systematically restore the airtightness of the rear cabin, which directly impacts the daily comfort of using the car.

Related Products and Technical Knowledge

If you are looking for other Mercedes door seals for your car, check out the Mercedes door seals available in our store to select complete body sealing kits for your specific model.

For those interested in a broader technical context and the evolution of solutions used by the brand, we recommend reading the article describing successive generations of flagship models: Evolution of the Mercedes S-Class: from W140 to W222 – innovations, model differences, and Mercedes auto parts over the years. This is a practical source of knowledge for planning upgrades and long-term vehicle maintenance.