Mercedes W177 Seal Door Window Guide Rear Right O/S Trim Strip A1777354200

Mercedes W177 Seal Door Window Guide Rear Right O/S Trim Strip is an original body component from the Window seals and trim strips group, designed for installation in the rear right door area of the A-Class W177 generation. The precisely fitted profile ensures a tight seal against the bodywork, improving cabin acoustic comfort and protection against water and contaminants. This is a practical solution for users looking to restore factory sealing properties and the aesthetics of the side body section.

Specifications and technical data

• SKU: A1777354200
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1777354200
• Substitutable numbers: A1777354200, A 177 735 42 00
• Location on the vehicle: Rear, Right
• Category: Window Seals, Gaskets & Trims

Purpose and function of the component

The described sealing strip is dedicated to installation in the rear right part of the body, in the passenger door area. Its purpose is to:

• limit the penetration of water, mud, and dust into the vehicle interior,
• reduce wind noise and rattling resulting from door operation,
• stabilize the window edge and door panel at the point of contact with the body,
• maintain an even gap between the door and the bodywork.

Thanks to its proper profile and factory fit, the strip works with other door seals, creating a cohesive protective system around the rear part of the cabin.

Construction and fit for Mercedes W177

The strip has been designed specifically for the rear right door structure of the Mercedes A-Class W177, which translates into:

• a properly contoured shape matched to the door's embossments and geometry,
• manufacturer-provided mounting points, facilitating installation and removal,
• compatibility with factory window guides and other seals in this area.

Such a solution allows for maintaining visual and technical consistency with other body elements, without the need for modifications or fitting universal replacements.

Performance characteristics and installation benefits

Replacing a worn or damaged door seal with an original strip intended for the rear right side of the body brings measurable operational benefits:

• reduces the risk of moisture appearing in the area of the sills and door upholstery,
• improves acoustic comfort when driving at higher speeds,
• reduces the likelihood of rattling and creaking resulting from door operation,
• allows for maintaining even door adhesion to the body on the rear passenger side.

The element from this group is particularly important in vehicles operated in urban conditions and on roads with poorer surface quality, where the body is exposed to frequent dirt and vibrations.

Condition of the component and installation aspects

The offered sealing strip comes from a used vehicle, which allows for maintaining a favorable ratio between quality and repair cost. In practice, this means the possibility of restoring the proper tightness of the rear right door zone without the need to invest in a new component from an authorized network. Installation of the element, while following basic service principles, can be carried out both in a professional workshop and by an experienced user equipped with the appropriate tools.

Complementary Mercedes window seals and trim strips

If you are planning a comprehensive repair or upgrade of the door zone in your Mercedes and need other elements from the same group, such as additional window seals, edge strips, or finishing elements around door openings, check the available parts in the Mercedes window seals and trim strips category.

More about the advantages of used parts

If you are considering a broader service strategy based on second-hand components and want to better understand how to optimally combine quality with savings, it is worth familiarizing yourself with practical tips regarding the selection of used OEM elements. Useful information on this topic can be found in the article Smart Skoda servicing – why second-hand parts are the best choice for your wallet, which discusses universal principles for choosing proven components.