Mercedes W251 Door Window Trim Strip Cover Rear Left N/S A2517350171

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W251 Door Window Trim Strip Cover Rear Left N/S is an original body component from the Window seals and trim strips group, designed for installation on the rear left side of the vehicle. It provides an aesthetic finish to the window edge, stabilizes its fitment, and helps prevent dirt and moisture from entering the door interior. This is a practical solution for users who want to maintain a consistent look of the side body line in their Mercedes R-Class (W251).

Specifications and technical data

• SKU: A2517350171
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2517350171
• Substitutable numbers: A2517350171, A 251 735 01 71
• Location on the vehicle: Rear, Left
• Part type: Window Trim
• Category: Window Seals, Gaskets & Trims

Purpose and function of the component

The presented window trim strip is designed specifically for the rear left side of the Mercedes W251 body, ensuring it maintains factory geometry and a perfect fit to the shape of the window and door frame. Its placement in the rear side zone allows for proper guidance of the window edge and maintains an even gap between the glass and the bodywork.

The component performs several key roles:

• stabilizes the window edge in the rear left door guide,
• limits the ingress of water and dirt into the area of the window lifting mechanism,
• improves the visual continuity of the side body line,
• supports body acoustics by reducing noise in the window area.

Construction and fitment for Mercedes W251

The trim strip was developed as a component dedicated to a specific generation of the Mercedes R-Class, which translates into precise fitment with the door frame and other side body components. The profile of the strip is adapted to the characteristic body line of the W251, ensuring visual consistency with other trim elements after installation.

Its original Mercedes origin ensures compliance with factory assembly tolerances, which facilitates service work and minimizes the risk of improper window seating. This is particularly important when replacing parts after a collision, during bodywork and paint repairs, or when removing corrosion spots in the rear door area.

Condition, service application, and benefits of installation

The component comes from a used vehicle, making it an attractive alternative to new parts while maintaining the manufacturer's original specifications. In service applications, such a trim strip will work well both for replacing damaged window trim and for completing missing components after body repairs.

The main benefits of installation include:

• maintaining the factory look of the side body section,
• improving protection of the window edge against external factors,
• reducing potential leaks in the rear left window area,
• maintaining compliance with original Mercedes assembly technology.

Support for selection and expansion of the window zone

If you are planning a comprehensive repair or upgrade of the window zone in your Mercedes and need other elements from the same group, such as additional trim strips, guide seals, or window masking profiles, check the available parts in the Mercedes window seals and trim strips category.

For drivers interested in a broader context regarding the cost-effectiveness of using original used components instead of refurbished solutions, the following guide article may be helpful: Manual transmission failures – why an original used part is sometimes a more sensible choice than refurbishment.