Mercedes-Benz A W168 Rear Left Door N/S Window Sealing Rail Inside A1687350365

Mercedes-Benz A W168 Rear Left Door N/S Window Sealing Rail Inside is a precisely fitted body component designed for the rear left door of the first-generation A-Class models. It ensures a tight seal between the door and the body, improving protection against water, noise, and contaminants, while supporting stable door operation within the frame. By maintaining factory geometry, it serves as a functional service solution for repairs to the side body area.

Specifications and technical data

• SKU: A1687350365
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1687350365
• Substitutable numbers: A1687350365, A 168 735 03 65, EM
• Location on the vehicle: Rear, Left
• Category: Door Panels

Purpose and function of the component

The rear left door sealing rail for the Mercedes A-Class W168 operates in the critical contact area between the door and the body. Its purpose is to:

• limit the ingress of water and moisture into the vehicle interior,
• reduce wind noise while driving,
• stabilize the door edge relative to the body frame,
• protect sheet metal edges from accelerated corrosion.

By maintaining the original sealing profile, the rail supports the acoustic comfort of the cabin and improves the tactile quality of door closure.

Compatibility and fitment for Mercedes W168

The component has been designed specifically for the Mercedes W168 body and is dedicated to installation in the Rear, Left area, i.e., on the rear left side of the vehicle. This ensures proper fitment to:

• the geometry of the door aperture on the rear driver's side,
• factory mounting points in the door frame,
• the original line of creases and body panel edges.

Such fitment minimizes the risk of material stress, leaks, and issues with door closure after replacing the component.

Performance characteristics and installation

As a part from the Door Upholstery group, the sealing rail works with the door skin, interior trim, and side window to create a cohesive protective and finishing system. In practice, this translates to:

• more stable door operation during repeated opening and closing,
• better separation of the interior from external factors,
• maintenance of the aesthetic contact line between the door and the body.

The used condition of the component allows for an economical repair while maintaining the original design and performance characteristics of the seal.

Benefits of using the original sealing rail

Using a factory sealing rail in a Mercedes W168 provides a range of practical service and operational benefits:

• preservation of the original body line and door fitment,
• reduction of the risk of rattles, squeaks, and play within the door panel,
• improved protection of the interior against water and dust compared to a faulty or deformed seal,
• possibility of replacing only the damaged section without interfering with other door components.

For workshops and individual users, this means efficient repair of the door area without the need for costly modifications.

Repair expansion and additional information

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 door cards, trim panels, or additional rails, check out the available parts in the Mercedes Door Upholstery category.

When selecting used body and interior components, it is worth paying attention to the compatibility of the intended use, the condition of the working surfaces, and the completeness of the mounts. If you want to better prepare for your purchase and avoid common problems when choosing components, the guide article Buying used car parts • Most common mistakes when choosing tuning parts, which discusses practical aspects of selecting parts from the secondary market, may be helpful.