Mercedes W251 Window Rail Seal Rear Left N/S Sealing Strip Trim A2517351965

The Mercedes W251 Rear Left Door Window Seal Strip is a precisely fitted component from the Doors and Door Panels group, designed for the rear left window of the Mercedes W251 body. It ensures a tight seal for the window, reduces noise, and protects the door interior from moisture and dirt, contributing to the stable operation of the window regulator mechanism.

Specifications and technical data

• SKU: A2517351965
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2517351965
• Substitutable numbers: A2517351965, A 251 735 19 65
• Location on the vehicle: Rear, Left
• Color: Black
• Category: Doors & Door Skins

Purpose and Function of the Seal Strip

The rear left door window seal strip is specifically designed for Mercedes W251 models, taking into account the door's geometry and window guide. The element is mounted in the window frame area, where it is responsible for:

• stable vertical window guidance during opening and closing,
• limiting the ingress of water and dust into the door interior,
• reducing wind noise at higher speeds,
• protecting the window edges from excessive wear.

Thanks to its precise fit for the specific body model, the strip maintains proper contact with the window and door frame, contributing to acoustic comfort and the correct operation of the entire mechanism.

Construction, Color, and Fitment

The strip is made in black, allowing for a cohesive integration with the factory finish of the window frame and seals in the Mercedes W251. The neutral color facilitates integration with various interior trim options and body paint colors, without the risk of visual discrepancies.

Its placement in the rear left door area makes this element crucial for the proper closing of the window in this part of the body. The appropriate profiling of the strip supports even pressure of the window against the seals, which is important for both sealing and the durability of the lifting mechanism.

Condition, Origin, and Benefits of Use

The offered door window seal strip comes from the group of original Mercedes components and is available in used condition. In practice, this means retaining the factory geometry and compatibility with door mountings, which simplifies installation and minimizes the risk of fitment issues.

Using an original part to replace a worn or damaged strip allows for:

• restoring proper sealing in the rear left window area,
• reducing window fogging caused by moisture entering the door interior,
• decreasing cabin noise originating from leaks around the window frame,
• protecting the window regulator mechanism from accelerated wear.

Professional Application and Installation

The rear left door window seal strip for the Mercedes W251 is intended for both workshops specializing in the Mercedes brand and for users who service their vehicles independently. Thanks to its factory fit to the door structure, installation is straightforward, without the need for body modifications.

When replacing, it is recommended to check the condition of the window guides and other seals within the door to fully utilize the potential of the newly installed element and ensure uniform operation of the entire system.

Expanding the Scope of Service Work

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 panels, reinforcements, or additional seals, check the available parts in the Mercedes Doors and Door Panels category.

If you are considering a broader range of vehicle modifications and want to consciously select used components, an article describing a practical approach to selecting used parts might be helpful – you can find it here: Best Used Parts for Your Car Tuning.