Mercedes W251 Door Window Trim Bar Cover Panel Rear Left N/S A2516981580

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W251 Door Window Trim Bar Cover Panel Rear Left N/S is an original body component designed for the rear left window area. Thanks to its precise fit to the door structure, it ensures an aesthetic finish to the window edge, stable seal guidance, and a consistent look for the vehicle's side profile. This is a practical solution for users who want to restore the factory look of the vehicle's side in a professional, technically correct, and visually consistent manner.

Specifications and technical data

• SKU: A2516904180
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2516904180
• Substitutable numbers: A2516904180, A 251 690 41 80, A2516981580, A 251 698 15 80
• Location on the vehicle: Rear, Left
• Category: Additional Glass & Window Parts

Purpose and function of the component

The described rear left window trim bar has been designed specifically for the Mercedes W251 body, taking into account the door geometry and the characteristic window line. Mounted in the rear part of the vehicle on the left side, it is responsible for:

• covering the window edge and seal against external factors,
• maintaining proper window guidance within the door plane,
• preserving the visual continuity of the side body line,
• reducing wind noise in the window area.

Thanks to its factory profile, the trim bar works in harmony with other window components, which facilitates proper installation and helps maintain structural consistency of the window zone.

Construction and fitment to the body

The component belongs to the Other car windows and window parts group, meaning it serves a complementary role to the main windows and lifting mechanisms. The trim bar's construction is profiled for the specific shape of the rear left door, maintaining appropriate mounting points and geometry that interacts with the seals and the window.

Such a solution allows for:

• maintaining factory gaps between the window and the bodywork,
• reducing stress within the window frame,
• easier adjustment of the window into the correct operating position,
• maintaining even pressure of the seal along the entire length of the edge.

As a result, the trim bar is particularly useful for post-accident repairs, replacing corroded or damaged frame elements, and for comprehensive restoration of the side body section.

Installation characteristics and service application

The trim bar is intended for installation in the rear left part of the vehicle, which is important both when selecting parts and when planning body and paint work. Proper placement on the vehicle facilitates identification of the component in service documentation and when comparing it with the existing frame on the car.

In workshop practice, this type of component is used, among other things, for:

• repairs after collisions in the rear door area,
• replacing deformed or corroded window trim bars,
• restoring tightness and improving window operation in the guides,
• visual restoration of the side body section in vehicles used intensively.

The used nature of the part allows for an economical restoration of the factory configuration while maintaining original geometry and compatibility with the Mercedes body.

Benefits of using an original window trim bar

Using an original rear left window trim bar in a Mercedes W251 translates into a number of practical operational benefits:

• Factory fit – a component designed for a specific body model, without the need for modifications or forced fitting.
• Visual consistency – maintaining a uniform window line and the characteristic look of the vehicle's side section.
• Support for tightness – a properly installed trim bar helps limit the ingress of water and contaminants around the seals.
• Stable window operation – proper guidance and support of the window edge affects the comfort of using the lifting mechanism.

For users who care about the technical correctness of repairs and maintaining the original character of the vehicle, such a component constitutes a functional complement to 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 guide rails, seals, or additional cover panels, check the available parts in the Other car windows and window parts Mercedes category.

Substantive support and car project development

When planning broader visual or mechanical modifications, it is worth using reliable sources of knowledge. If you are interested in how to use dismantled parts in tuning and service projects, take a look at the article Emotions and design – visual and mechanical tuning of a Seat using dismantled components, where you will find practical tips on the safe selection and installation of used components.

For those particularly interested in the Mercedes brand, a cross-sectional material on the development of technical solutions in higher model classes may also be useful – more information can be found in the article Evolution of the Mercedes S-Class: from W140 to W222 – innovations, model differences, and Mercedes auto parts over the years, which helps to better understand the manufacturer's design philosophy and approach to designing body elements and window zones.