Mercedes W212 Window Rail Seal Rear Right O/S Exterior Strip Trim A2127351065

Visual condition of the part 

The product shows signs of use visible in the photos. 

Mercedes W212 Window Rail Seal Rear Right O/S Exterior Strip Trim is a precisely fitted body component designed for the rear right window in E-Class models. It is responsible for creating a tight seal between the glass and the door panel, reducing noise, water ingress, and debris, while simultaneously stabilizing the window in the guide rail. By maintaining the factory geometry and the original sealing profile, it ensures the proper operation of the window lifting mechanism and provides an aesthetic finish to the edge.

Specifications and technical data

• SKU: A2127351065
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2127351065
• Substitutable numbers: A2127351065, A 212 735 10 65
• Location on the vehicle: Rear, Right
• Color: Black
• Category: Doors & Door Skins

Purpose and technical function

The described sealing strip is a component from the Doors and door panels group, mounted on the rear right side of the vehicle. Its purpose is to:

• seal the contact point between the window and the door frame,
• limit water ingress into the interior of the door,
• reduce wind noise at higher speeds,
• stabilize the window edge during regulator operation.

The black color of the strip allows for a seamless integration with factory body trim elements, regardless of the vehicle's paint color. This maintains a uniform side profile, ensuring the transition between the glass and the panel remains visually neutral and technically correct.

Construction, material, and fitment

The rear right exterior window seal has been designed specifically for Mercedes W212 series models, maintaining the correct working profile and mounting points. The appropriately selected stiffness and material flexibility allow for:

• secure adhesion to the window and door edge,
• compensation for minor body deformations during driving,
• maintenance of a seal under varying temperature conditions.

The black surface of the strip blends well with factory window frames and other sealing elements, facilitating installation without the need to modify adjacent components.

Characteristics of the used component

The offered seal comes from dismantling, which means it is a used part that retains its original geometry and mounting purpose. This type of component allows for an economical repair of the door area while maintaining compliance with the factory design. In practice, this translates into:

• easier fitment with the existing door frame,
• maintenance of proper window guidance,
• reduced risk of leaks resulting from an incorrect aftermarket profile.

To maximize the potential of dismantled components and ensure their durability, it is recommended to use appropriate maintenance agents and regularly check the condition of the seals.

Installation and maintenance tips

When replacing the rear right exterior window strip, it is recommended to:

• thoroughly clean the door edge and window guide before installation,
• check the condition of the window lifting mechanism and other seals within the door area,
• verify window operation after installation – smooth movement, no rubbing against the strip, and even adhesion.

A correctly installed seal supports the protection of the door interior against corrosion and helps maintain cabin acoustic comfort. In the case of a wider door area renovation, it is worth considering the replacement of other sealing elements on the same side of the vehicle to achieve a consistent result.

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 exterior window strips, edge seals, or additional trim profiles, check the available parts in the Mercedes Doors and door panels category.

To better care for the durability of components from dismantling, including seals and body strips, it is worth reading the practical tips on care and maintenance available in the article How to extend the service life of used car parts?.