Mercedes W177 Rear Left N/S Door Window Strip Seal Black Gloss A1777352301

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W177 Rear Left N/S Door Window Strip Seal Black Gloss is an original body trim component designed for installation on the rear left door of W177 series models. Thanks to its factory profile and black gloss finish, the strip helps restore the cohesive look of the side bodywork and ensures proper sealing of the door edge. It is a practical solution for users who want to maintain aesthetics and functionality in accordance with the manufacturer's standards.

Specifications and technical data

• SKU: A1777352301
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1777352301
• Substitutable numbers: A1777352301, A 177 735 23 01
• Location on the vehicle: Rear, Left
• Color: Black
• Category: Moulding Strips

Purpose and body fitment

The door window strip seal has been designed specifically for installation on the rear left door, which guarantees proper fitment to the body contours and stable seating on the panel edge. The component belongs to the Decorative strips and tapes group, combining a sealing function with an aesthetic one, streamlining the vehicle's side line and masking assembly gaps.

The black gloss finish allows for a consistent match with factory decorative elements, such as other door strips or window frames. This solution is particularly beneficial when replacing a single component after mechanical damage or during a visual refresh of the entire side of the vehicle.

Technical and functional characteristics

The strip serves as both a seal and a masking element, which limits the ingress of dirt and moisture around the door edge. The precisely formed profile works with the rear door structure, ensuring:

• stable alignment of the body line on the lower or side part of the door,
• reduction of wind noise while driving,
• aesthetic closure of the space between the panel and other trim elements.

The original Mercedes origin helps maintain factory assembly tolerances, which facilitates installation and minimizes the risk of mismatching with other body components.

Color and surface finish

The black gloss finish is characteristic of modern styling versions that use contrasting, lacquered decorative elements. This type of surface blends well with both light and dark body paints, as well as other black details such as window surrounds or mirrors.

The glossy surface structure allows for easy maintenance – road dirt and deposits can be removed with standard exterior care products, without the need for specialized preparations. As a result, the strip maintains a consistent look with other body trims for a longer period.

Condition and service application

The product is offered as a used part, which is a reasonable choice for post-accident repairs, targeted visual corrections, or restoring the completeness of the side body line. Replacing the strip is particularly justified in situations where the existing component has cracked, deformed, or lost its stable mounting on the door edge.

Selecting an original sealing strip for the rear left side of the vehicle allows for maintaining stylistic consistency and reducing the time required for adjustment during installation. This is a practical solution for body shops and individual users who expect a predictable result after replacement.

Integration with other Mercedes decorative elements

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and need other components from the same group, such as additional strips, decorative tapes, or masking trim strips, check the available parts in the Mercedes decorative strips and tapes category.

For drivers interested in a broader context of modernization and the selection of used body components and trim elements, an article describing the evolution of a popular hot-hatch may be helpful – you can find more information in the material Hot-hatch legend: the evolution of the VW Golf GTI from Mk1 to Mk8 – design changes and VW car parts.