Mercedes W221 Rear Door Left N/S Window Regulator Surround Cover A2217301589

Mercedes W221 Rear Door Left N/S Window Regulator Surround Cover is an original body component designed for installation in the rear left door of the S-Class limousine. As part of the Linings, decorative strips and trims group, it ensures an aesthetic finish for the door interior and provides stable guidance for the window mechanism components, which translates into smooth and quiet operation of the regulator.

Specifications and technical data

• SKU: A2217301589-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2217301589
• Substitutable numbers: A2217301589, A 221 730 15 89
• Location on the vehicle: Rear, Left
• Category: Trim

Purpose and function of the component

The presented guide cover is dedicated to the rear left door area in the Mercedes S-Class W221 generation. Its task is to organize the space around the window lifting mechanism, protect working components from accidental damage, and aesthetically close the internal door panel structure.

Thanks to its precise fit to the Mercedes W221 door structure, the component helps maintain the correct position of guides and mounts, which promotes smooth window operation and reduces unwanted vibrations and noise while driving.

Construction and fitment for Mercedes W221

The cover has been designed as a system part, working in conjunction with the factory window regulator and other door components. The design includes appropriate embossments, mounts, and service openings, which facilitates installation and subsequent access to the mechanism in case of adjustment or repair needs.

As a body finishing element, the cover also helps organize wiring harnesses and other sub-assemblies located inside the door, which is important when servicing the vehicle and maintaining the factory assembly standard.

Condition, origin, and benefits of use

The offered product is an original Mercedes component sourced from dismantling, which means it retains factory geometry, mounting points, and compatibility with the W221 door structure. A used OEM part is a sensible choice for post-accident repairs or when replacing damaged internal door components, allowing for cost reduction while maintaining high manufacturing quality.

Using the original rear left window regulator guide cover allows you to:

• restore the factory layout of elements inside the door,
• maintain the proper operation of the window lifting mechanism,
• uphold the consistent assembly standard characteristic of the Mercedes brand.

Installation tips and service application

The component is intended for installation in the rear left part of the body, within the passenger or driver's door on the side opposite to the steering wheel – depending on the market version. Installation by a person with experience in working with door upholstery and window mechanisms is recommended, which helps avoid damage to clips, seals, and other components.

The cover will prove useful both during local window mechanism repairs and during broader bodywork and paint jobs after a collision, when it is necessary to restore the complete internal structure of the door along with finishing elements.

Related body components and additional information

If you are planning a comprehensive repair or upgrade of the door and side panel area in your Mercedes and need other elements from the same group, such as covers, strips, or decorative trims, check out the available parts in the Mercedes Linings, decorative strips and trims category.

For broader bodywork and renovation projects, it is worth checking out practical tips regarding the selection of used body components – a detailed discussion can be found in the article Bodywork and chassis – post-accident repairs using dismantled parts, which covers, among other things, installation procedures, selection of OEM parts from dismantling, and typical problems encountered during post-collision repairs.