Mercedes W164 Front Left Door N/S Window Guide Seal Gasket

Mercedes W164 Front Left Door Window Seal is a precisely fitted component from the Door Upholstery group, designed for installation in the front left door of Mercedes vehicles. It ensures a tight seal for the window, reduces noise, and protects the door's interior from moisture and dirt, contributing to the stable operation of the window regulator and the acoustic comfort of the cabin.

Specifications and technical data

• SKU: A1647250325
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1647250325
• Substitutable numbers: A1647250325, A 164 725 03 25, EM
• Location on the vehicle: Front, Left
• Category: Door Panels

Purpose and Function of the Seal

The presented seal is specifically designed for the front left door area of the Mercedes W164 body. Its purpose is to:

• maintain proper sealing between the window and the door frame,
• prevent water and dust from entering the door's internal structure,
• reduce wind noise at higher speeds,
• stabilize the window's movement within its guide.

Thanks to its specific profile, the seal works in conjunction with the factory window regulator mechanism, ensuring smooth operation and minimizing the risk of jamming or excessive play.

Compatibility and Fit for Mercedes W164

The seal is intended for installation in the front left door of W164 series vehicles, meaning its geometry and shape are adapted to the factory door frame and original window. Using a component from the same construction group as the part fitted on the production line allows for maintaining:

• correct adhesion to the window edge and door panel,
• proper alignment with other door upholstery elements,
• a consistent visual appearance of the interior and the outer door edge.

Such a precise fit is particularly important for premium vehicles where both user comfort and aesthetic finish are crucial.

Characteristics of a Used Component

The offered seal is a used part, meaning it has been removed from a vehicle and retains its original geometry and mounting method. In practice, this translates to:

• factory profile shape of the sealing element,
• retention of mounting points consistent with the door's construction,
• possibility of installation without the need for modifications or adjustments.

For many users, choosing an original, used seal is a sensible alternative to aftermarket replacements with uncertain profiles, especially in vehicles where the consistency of acoustic and sealing parameters is important.

Installation and Operational Aspects

The driver's side door window seal operates under demanding conditions – it is exposed to frequent window opening and closing cycles, temperature changes, and weather elements. Replacing a worn-out component with a functional seal allows for:

• reducing unwanted creaks and vibrations of the window while driving,
• limiting window fogging caused by moisture entering the door interior,
• improving the acoustic comfort of the cabin, especially at highway speeds.

Due to its factory-specific fit to the door structure, installation is a straightforward process – once properly seated in the guides and clips, the seal forms a cohesive system with other interior trim elements.

Expanding Door Area Modernization

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

For users interested in a broader perspective on selecting used OEM components and the impact of proper parts on vehicle handling, an article comparing solutions in sports car constructions may be helpful – you can find it here: Go-Kart Feeling XXL: Used N18 Turbocharger vs. B48 – What to Choose for a Mini Cooper S?.