Mercedes W176 Front Left Right N/O/S Door Seal Gasket A1766920076

Mercedes W176 Front Left Right N/O/S Door Seal Gasket is an original component from the Door seals group, designed for use on the front driver and passenger side doors. Its black color and factory profile ensure proper sealing of the door perimeter, reducing noise, vibrations, and moisture penetration into the vehicle interior. This is a practical solution for users who want to restore proper door operation and acoustic comfort in their Mercedes.

Specifications and technical data

• SKU: A1766920076
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1766920076
• Substitutable numbers: A1766920076, A 176 692 00 76
• Location on the vehicle: Front, Left, Right
• Part type: Door Seal
• Color: Black
• Category: Door Seals

Purpose and body fitment

The presented seal is designed for installation on the front left and right sides of the body. The profile construction is adapted to the shape of the door frame in W176 series models, which allows for secure seating in the factory slots and maintenance of the correct contact geometry with the bodywork. The black color of the seal is consistent with the original door edge finish, ensuring the component does not stand out visually after installation. Using a dedicated seal reduces the risk of leaks that may occur when using universal replacements.

Technical and functional characteristics

The seal operates in the critical area where the door meets the body, where it is responsible for:

• reducing the ingress of water and moisture into the vehicle interior,
• limiting wind noise at higher speeds,
• dampening minor vibrations and squeaks at the contact point between the door and the body,
• stabilizing the position of the door leaf when closing. Thanks to the factory profile and appropriately selected material flexibility, the seal ensures even pressure around the entire perimeter, which translates into more predictable door closing and stable maintenance of the gap between the door and the body.

Condition of the component and installation aspects

The offered seal is a used component, which in practice means it comes from vehicle dismantling and may show signs of wear typical for this type of part. For many users, this is a reasonable compromise between cost and maintaining the original manufacturer's specifications, especially in the case of rubber elements with a dedicated profile. During installation, it is worth paying attention to:

• thorough cleaning of the door edge and adjacent surfaces,
• correct positioning of the seal in the corners,
• checking the fit after closing the door (especially in the upper part of the frame). A properly installed seal helps maintain vehicle comfort and reduces the risk of window fogging and upholstery dampness.

Benefits of using an original Mercedes seal

Using an original component from the Door seals group in a Mercedes W176 allows for maintaining factory sealing and cabin acoustic parameters. This is particularly important in vehicles used daily, where long-term exposure to rain, road salt, and temperature changes can accelerate the wear of non-factory replacements. Choosing this seal means:

• maintaining technical consistency with other body components,
• reducing unwanted sounds while driving,
• more stable door closing on the driver and passenger side. 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 additional perimeter seals, sealing strips, or contact profiles, check the available parts in the Mercedes door seals category. If you are also interested in the topic of selecting used air conditioning system components and want to better understand when it is worth reaching for original components from dismantling, check out the article: Lack of cooling in the car – original used air conditioning compressor as an alternative to new parts.