Mercedes R171 Windscreen A-Pillar Trim Left N/S Calcite White - 650 A1716900139

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes R171 Windscreen A-Pillar Trim Left N/S Calcite White - 650 is an original body component from the Window seals and trims group, designed for installation on the left side of the vehicle. The Calcite White trim ensures a consistent look with the factory paintwork and assists in proper window guidance and sealing of the A-pillar area.

Specifications and technical data

• SKU: A1716900339-CW
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1716900339
• Substitutable numbers: A1716900339, A 171 690 03 39, A1716900139, A 171 690 01 39
• Location on the vehicle: Left
• Color: Calcite White - 650
• Category: Window Seals, Gaskets & Trims

Purpose and function of the component

The presented trim is dedicated to Mercedes R171 series models and operates at the contact point between the side window and the pillar. It is responsible for stable guidance of the window edge and for maintaining the correct sealing geometry in this part of the body. As a result, it limits the ingress of water and contaminants into the interior and reduces unwanted wind noise while driving.

The component has been designed as a part structurally matched to the factory door and pillar profile, which facilitates installation and helps maintain the original body line. It is a practical solution when replacing a damaged or worn trim after a collision, window removal, or renovation of the side body area.

Calcite White color and visual fit

The trim is finished in the Calcite White shade, which allows for an aesthetic match to Mercedes vehicles painted in this color. Thanks to this, a uniform side line is maintained after installation, without tonal differences between the trim and other body elements.

The factory surface finish also facilitates subsequent maintenance – the trim can be washed and cared for along with the bodywork, without the need for special procedures. This is a beneficial solution for cars where visual consistency and maintaining the original stylistic character are important.

Vehicle placement and installation aspects

The component is intended for installation on the left side of the vehicle, in the area of the pillar by the side window. Such placement requires maintaining the correct sequence of work during the removal and re-seating of the window, which is why the trim is structurally prepared to work with factory mounting points.

In practice, installation involves precisely positioning the trim relative to the door and window edges to maintain even seal adhesion and the correct window operating path. Proper fitting of this component is important for both acoustic comfort and the durability of the entire sealing system.

Product characteristics and service application

The trim belongs to the group of body components that are often replaced during post-accident repairs, door geometry corrections, or window replacements. Using an original component allows for compliance with the vehicle's factory specifications and facilitates work for body shops and workshops specializing in the Mercedes brand.

The product will work well both for a single replacement of a damaged trim and for broader renovation work in the side body area, where it is essential to maintain proper window guidance and sealing in the pillar region.

Expansion of service work and related components

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

For larger service projects on vehicles of this brand, it is also worth checking out expert material regarding power units – a practical supplement may be the article "The second life of the Mercedes OM642 engine – how injectors and the turbocharger restore the power of the 3.0 V6 CDI", which helps to better plan work on cars used intensively or prepared for further operation.