Mercedes W176 Window Rail Seal Front Left N/S Sealing Strip Trim A1767350465

Mercedes W176 Front Left Door Window Seal is a precisely fitted body part from the Doors and Door Panels group, designed for installation on the driver's side. It ensures a tight seal between the window and the door frame, reduces wind noise, and protects the interior from water and dirt. Its factory-designed geometry guarantees stable window guidance and proper operation of the lifting mechanism.

Specifications and technical data

• SKU: A1767350465
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1767350465
• Substitutable numbers: A1767350465, A 176 735 04 65
• Location on the vehicle: Front, Left
• Color: Black
• Category: Doors & Door Skins

Purpose and Function of the Window Seal

This seal is dedicated to the front left door of the Mercedes W176 model. The component works in direct contact with the window, creating a flexible barrier between the glass and the door frame. Its specifically shaped profile limits air drafts, reduces noise at higher speeds, and helps maintain a stable microclimate inside the vehicle.

The seal belongs to the group of body parts responsible for:

• sealing the window perimeter in the door,
• protecting against water ingress into the door and cabin,
• dampening window vibrations during driving,
• reducing external noise.

Construction, Color, and Fitment

The element is made in black, allowing for a seamless integration with the factory finishes of the door frame and body pillars. Its neutral color facilitates aesthetic integration with most paint and upholstery configurations, without the risk of visual discrepancies.

The seal has been specifically designed for installation in the front left door, taking into account the characteristic geometry of the W176 body. The appropriate profiling of corners and straight sections facilitates correct seating in the mounting groove, which translates to stable adhesion to the window along its entire perimeter.

Benefits of Using an Original Door Seal

Using a dedicated seal in the front driver's side door allows for the restoration of factory-level sealing and acoustic comfort. A correctly chosen component reduces the risk of window fogging at the edges, minimizes moisture ingress into the door, and supports the proper operation of the window lifting mechanism.

Key benefits include:

• precise fit for the W176 body – no need for modifications or forceful adjustments,
• stable window guidance – reduced risk of creaks and looseness while driving,
• consistent black color matching factory finishes,
• the ability to restore driving comfort after replacing a worn or leaky seal.

Application Area and Door System Expansion

The seal operates in the critical contact area between the window and the door frame, where any damage or deformation can lead to noise, leaks, or improper operation of the lifting mechanism. Replacing a worn component is particularly recommended upon noticing signs of leaks, increased noise around the door, or issues with the window closing properly.

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and need other parts from the same group, such as panels, reinforcements, or frames, check the available parts in the Mercedes Doors and Door Panels category.

Additional Technical and Operational Information

The front left door window seal is a wear-and-tear item that can degrade over time due to the operation of the window mechanism, temperature changes, and exposure to atmospheric conditions. Replacing it with a correctly chosen component helps minimize the need for additional door adjustments and improves the overall refinement of the vehicle's body operation.

For drivers interested in a broader technical context of this brand's vehicles, including the characteristics of four-wheel-drive systems and typical components, the following article may be helpful: xDrive, 4Matic, quattro or 4Motion – Comparison of AWD Systems from BMW, Mercedes, Audi, and VW.