Mercedes S204 Rear Door Window Frame Guide Rail Seal Rubber Left N/S A2047352525

Mercedes S204 Rear Door Window Frame Guide Rail Seal Rubber Left N/S is a precision body component responsible for stable guidance and a tight fit of the rear left window. A properly selected guide rail with a seal reduces noise, improves cabin acoustic comfort, and supports the correct operation of the window lifting mechanism. Choosing an original Mercedes component allows you to maintain the factory fit and structural consistency of the entire window area.

Specifications and technical data

• SKU: A2047352525
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2047352525
• Substitutable numbers: A2047352525, A 204 735 25 25
• Location on the vehicle: Rear, Left
• Category: Window Seals, Gaskets & Trims

Purpose and function of the component

The guide rail integrated with the seal for the rear left window in the S204 estate body is responsible for the proper vertical guidance of the window and its stabilization during opening and closing. Thanks to its appropriately shaped profile, it ensures:

• maintaining the window in the correct position relative to the door frame,
• reduction of play and vibrations while driving,
• sealing the contact between the glass and the body in the rear part of the vehicle.

An element configured in this way has a direct impact on the comfort of using the vehicle, the reduction of wind noise, and the protection of the interior against moisture.

Construction and body fitment

The presented guide rail seal is designed for installation in the rear left window area, taking into account the body geometry and the kinematics of the lifting mechanism. The profile of the element is matched to the shape of the door frame, which facilitates installation and allows for maintaining uniform pressure on the window along its entire length.

The appropriate stiffness of the guide rail and the flexibility of the sealing part support smooth window operation, minimizing the risk of jamming and uneven movement. This solution is particularly important in vehicles used for longer distances, where the stability and tightness of the windows are significant for driving comfort.

Performance characteristics and installation

The element from the Window seals and trims category is intended for installation in the rear part of the vehicle on the driver's side. Its construction allows for service replacement in case of wear of the factory guide rail, mechanical damage, or deterioration of the seal in the window area.

The main advantages of using this guide rail with a seal include:

• maintaining the factory geometry of vertical window guidance,
• reduction of air drafts and noise at higher speeds,
• improved protection of the interior against water and external contaminants,
• visual consistency with other window trim elements.

The used product is a service solution for users who want to restore the correct operation of the rear left window without the need to use replacements with uncertain fitment.

Compatibility and part identification

The original manufacturer markings and assignment to a specific mounting position in the vehicle facilitate unambiguous identification of the element during selection. In practice, this means that the guide rail seal is prepared to work with the factory window lifting mechanism and other door frame components, without the need for structural modifications.

To ensure proper fitment, it is worth verifying the compatibility of the part with your specific vehicle, using data such as the make, location on the vehicle, or reference numbers available in the technical specification.

Service expansion for seals and trims

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

Technical support and additional knowledge

When performing service work on the body and moving window elements, it is worth paying attention to the general condition of the mechanisms and the correct guidance of moving parts. To expand your knowledge on the diagnostics and operation of key vehicle systems, you can use guide materials, such as the article Steering system and power steering – how it works and what breaks?, which shows a practical approach to assessing the condition of components and planning repairs.