Mercedes W221 Door Seal Rear Left N/S Window Sealing Frame Gasket A2217310080

Mercedes W221 Door Seal Rear Left N/S Window Sealing Frame Gasket is an original body component from the Door seals group, designed for the rear left area of the vehicle. The precisely fitted sealing profile supports the proper operation of the window and limits the penetration of noise, moisture, and contaminants into the cabin. Using this component allows for a technically correct repair without the need to resort to aftermarket replacements with uncertain parameters.

Specifications and technical data

• SKU: A2217310080
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2217310080
• Substitutable numbers: A2217310080, A 221 731 00 80
• Location on the vehicle: Rear, Left
• Category: Door Seals

Purpose and function of the seal

The presented seal is dedicated to the rear left part of the body, where it is responsible for the peripheral sealing of the window area in the door. The element works in direct contact with the glass and the door panel, stabilizing its guidance and reducing vibrations while driving.

Thanks to its proper profile and geometry, the seal supports:

• reduction of wind noise in the rear cabin area,
• protection of the door interior against water and dirt,
• maintaining proper pressure of the window against the frame,
• preserving the acoustic comfort of rear seat passengers.

Benefits of using an original Mercedes seal

The original door seal for the Mercedes W221 model ensures factory-fit to the shape of the frame and glass, which translates into stable seating without the need for additional modifications. Precise fitment with the door structure minimizes the risk of leaks, squeaking, or improper operation of the window lifting mechanism.

Choosing a dismantled component allows you to maintain material consistency with other body elements while keeping repair costs favorable. This solution is particularly recommended for:

• local repairs after a collision or bodywork intervention,
• removing the effects of wear and tear in the door area,
• restoring acoustic comfort in the cabin.

Installation characteristics

The seal is designed for installation in the rear left part of the vehicle, which simplifies the identification of the correct installation point. The design tailored to the specific body model enables proper placement in factory guides and clips, without the need for cutting or heat forming.

When replacing, it is recommended to:

• thoroughly clean the contact surface in the door frame,
• check the condition of the window lifting mechanism,
• verify even pressure around the entire perimeter after closing the door.

This approach allows you to fully utilize the sealing properties of the element and reduce the risk of needing further intervention in the near future.

Application in service and vehicle restoration

The rear left door seal for the Mercedes W221 will prove useful both in professional body and paint shops and in workshops specializing in the restoration of premium vehicles. Using original Door seals is particularly important in cars where acoustic comfort and cabin tightness are a priority.

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and need other elements from the same group, such as frame seals, door sill seals, or additional sealing profiles, check the available parts in the Mercedes Door seals category.

Additional information and inspiration

For those interested in the wider use of dismantled parts in modernization and repair projects, valuable tips on component selection and cost optimization can be found in the article Emotions and design – visual and mechanical tuning of a Seat using dismantled components. Although the description concerns a different brand, the issues discussed there relate to a practical approach to used OEM elements in the automotive industry.