Mercedes A-Class W168 Rear Right Door O/S Window Guide Seal Gasket A1687351425

Mercedes A-Class W168 Rear Right Door O/S Window Guide Seal Gasket is a precisely fitted component from the Door Upholstery group, responsible for the proper guidance and sealing of the rear passenger-side window. The appropriate geometry and profile of the seal help reduce noise, vibrations, and moisture ingress into the interior, which translates into stable operation of the window regulator mechanism and vehicle comfort.

Specifications and technical data

• SKU: A1687351425
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1687351425
• Substitutable numbers: A1687351425, A 168 735 14 25, EM
• Location on the vehicle: Rear, Right
• Category: Door Panels

Purpose and function in the rear door

The described window guide seal has been designed specifically for the rear right side of the body in the Mercedes A-Class W168 generation. Its task is to provide stable vertical guidance of the glass pane so that the window moves smoothly in the door channel, without jamming or excessive play. A correctly selected guide reduces the risk of the window tilting, which is important for both the durability of the regulator and the sealing of the entire door assembly.

Benefits of using an original guide seal

Using a dedicated seal in the rear right window guide of the Mercedes A-Class W168 allows for maintaining the factory operating parameters of the window mechanism. A component with the correct profile:

• ensures stable window guidance throughout its entire range of motion,
• reduces the transmission of vibrations from the body to the glass,
• supports the maintenance of the window edge seal against the door frame,
• reduces wind noise at higher speeds.

As a result, the acoustic and functional comfort of the rear cabin remains close to the manufacturer's specifications, and the window regulator operates under more predictable load conditions.

Installation characteristics and fitment

The window guide seal is intended for installation in a specific location on the vehicle body – the rear right door. This assignment to a specific side of the vehicle facilitates the selection of the correct component during post-collision repairs, replacement of corroded or worn guides, and bodywork/painting tasks in the area of the right rear body section. Precise fitment to the construction of the Mercedes W168 door allows for installation without the need to modify the shape or length of the seal.

The component comes from a used vehicle, which in practice means it is a part with parameters close to factory standards, originating from the same type of door construction it is intended for. For many users, this represents a favorable compromise between quality and repair cost, especially during comprehensive reconstruction of the side body zone.

Application in service practice

Replacing the window guide seal is recommended, among other situations, when:

• the window in the rear right door moves with resistance or makes unusual noises,
• there are leaks around the window edge and moisture appears inside the door,
• after bodywork repairs, it is necessary to restore full door functionality.

Selecting a component dedicated to a specific model and side of the vehicle facilitates work for body shops and workshops dealing with car door systems, and also speeds up the process of reassembling the door after accident repairs.

Supplementing the door zone in the Mercedes A-Class

If you are planning a comprehensive repair or upgrade of the door zone in your Mercedes and need other elements from the same group, such as door panels, trim strips, or additional seals, check the available parts in the Mercedes Door Upholstery category.

More on reducing vehicle downtime

To better plan the repair of the rear right door zone and reduce the car's downtime in the workshop, it is worth learning practical tips on using a wide range of used parts from a single warehouse – details can be found in the article No more waiting for weeks – how a wide range of parts in one warehouse actually reduces your car's downtime at the mechanic?.