Mercedes W221 Window Guide Rear Door Right O/S Seal Frame Rail A2217350425

Mercedes W221 Window Guide Rear Door Right O/S Seal Frame Rail is a precision body component responsible for the stable guidance and effective sealing of the rear right window. A properly selected guide minimizes noise, limits moisture ingress, and improves acoustic comfort inside the vehicle. Choosing an original component from the Window seals and trims group allows you to maintain the factory operating parameters of the window mechanism.

Specifications and technical data

• SKU: A2217350425
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2217350425
• Substitutable numbers: A2217350425, A 221 735 04 25
• Location on the vehicle: Rear, Right
• Category: Window Seals, Gaskets & Trims

Purpose and function of the component

The described guide-seal is dedicated to the rear right window in Mercedes W221 series models. Its task is to simultaneously guide the window in the correct track and ensure a seal between the glass and the door frame. Thanks to this:

• the window lifting and lowering mechanism operates smoothly, without unnecessary resistance,
• the phenomenon of rattling and vibration of the window while driving is reduced,
• protection of the interior against water, dust, and air gusts is increased.

Using the correct guide in the rear right part of the body is important for both comfort and the durability of the remaining window mechanism components.

Benefits of using the original guide-seal

Choosing an original Mercedes component allows you to maintain compatibility with the factory door geometry and window profile. This translates into:

• precise fit to the door frame and window shape,
• stable window guidance throughout its entire range of operation,
• reduced risk of premature wear of the lifting mechanism,
• more predictable window behavior during frequent opening and closing.

The element from this group is particularly important in high-end vehicles, where increased acoustic comfort and proper cabin insulation are expected.

Installation and operational characteristics

The rear right window guide-seal is structurally adapted to a specific area of the body, which facilitates correct installation. When replacing, it is worth paying attention to:

• cleaning the mounting slots in the door before installing the new component,
• checking the condition of the window lifting mechanism,
• correct positioning of the seal along the entire length of the window guide.

A properly installed guide reduces the risk of window jamming and leaks in the rear right part of the vehicle, which is important for daily operation.

Product condition and service application

The offered item comes from a group of used components, which allows for an economical repair while maintaining the original manufacturer's specifications. This type of solution is often chosen in professional workshops dealing with the service of high-end Mercedes models, where structural compatibility and proper fit with other door elements are essential.

Expansion of upgrades within windows and seals

If you are planning a comprehensive repair or upgrade of the side glazing area in your Mercedes and need other elements from the same group, such as additional window seals, trim strips, or guides in other doors, check the available parts in the Mercedes window seals and trims category.