Mercedes W177 Window Seal Door Rear Right O/S Sealing Gasket Frame Strip Trim

Mercedes W177 Window Seal Door Rear Right O/S Sealing Gasket Frame Strip Trim is an original body component designed for the rear right side of the vehicle. It ensures a tight fit of the window to the door frame, reducing noise, vibrations, and water ingress. Thanks to its factory-spec fitment, it is a functional service solution for owners of the Mercedes A-Class W177 generation.

Specifications and technical data

• SKU: A1777351600-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1777351600
• Substitutable numbers: A1777351600, A 177 735 16 00
• Location on the vehicle: Rear, Right
• Category: Window Seals, Gaskets & Trims

Purpose and function in the vehicle

The presented seal is a component mounted in the rear right part of the body, in the area of the door frame and window. It is responsible for:

• sealing the contact point between the window and the door frame,
• reducing wind noise while driving,
• protecting the interior from water and contaminants,
• stabilizing the window in the guide rail.

Thanks to its precise profile, the seal works in harmony with the factory door construction, which translates into proper operation of the window lifting mechanism and maintains the appropriate rigidity of the entire frame.

Original origin and fitment

The component comes from the Mercedes range of parts, which ensures adherence to factory manufacturing standards and geometry. The original Mercedes W177 Window Seal Door Rear Right O/S Sealing Gasket Frame Strip Trim:

• is designed specifically for the W177 body,
• has a shape consistent with the door line and bodywork contours,
• allows for installation in existing mounting points without modifications.

This type of solution helps avoid problems with doors not closing properly, leaks, or improper window fitment, which often occur with non-original parts.

Condition of the component and service application

The seal is in used condition, making it a practical choice for post-accident repairs, replacing corroded or worn-out elements, and for door reconstruction after bodywork and paint repairs. It is particularly effective where maintaining the correct geometry of the window frame and reducing repair costs while using original body components is crucial.

Benefits of installing an original window frame seal

Using this seal in the rear right part of the vehicle allows you to:

• maintain the factory level of acoustic comfort inside the cabin,
• minimize the risk of water leaks in the door area,
• preserve the correct alignment of the window to the bodywork,
• reduce wear on the window lifting mechanism resulting from improper guidance.

For workshops and users, this means a stable, predictable repair result and easier diagnostics of any potential leaks in the future.

Support with selection and additional information

When selecting body components for a Mercedes, it is worth using the manufacturer's markings and the location on the vehicle to ensure full compatibility with the specific body version. In case of doubts regarding part compatibility with a specific vehicle, specialized guides can be helpful – you will find practical tips in the article Buying parts online without risk – 5 proven ways to verify component compatibility using OEM numbers and paint codes.

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