Mercedes-Benz A-Class W168 Front Left Door N/S Window Seal Gasket A1687250725

The MERCEDES W168 Front Left Door Window Seal is a precisely fitted component from the Automotive Glass category, designed for installation in the front left door of Mercedes vehicles. It ensures a tight seal for the window, reduces wind noise, and protects the interior from water and dirt, contributing to a stable and comfortable driving experience.

Specifications and technical data

• SKU: A1687250725
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1687250725
• Substitutable numbers: A1687250725, A 1687250725, A 168 725 07 25, ASZ
• Location on the vehicle: Front, Left
• Category: Car Glass

Purpose and Function of the Seal

This seal is specifically designed for the front left door area, where it guides and seals the window. A correctly chosen profile minimizes glass vibrations, reduces the risk of rattling, and supports the smooth operation of the window regulator mechanism. This allows the window to move freely, and the cabin remains better insulated from external factors.

This part belongs to the body components group, which significantly impacts interior acoustics, upholstery protection, and the durability of electrical components within the door. Proper fitting of the seal to the specific Mercedes model ensures factory-level sealing performance and reduces the risk of window fogging.

Compatibility and Fit for Mercedes W168

The presented seal is intended for installation in the front left part of the vehicle, eliminating the need for modifications or forcing the fit. Its design matches the door geometry used in the W168 series, ensuring that the contact line with the window and the door edge is consistent with factory solutions.

Correct fitment for the specific mounting location simplifies servicing, whether performed by a professional workshop or during a DIY replacement. A properly fitted seal reduces the risk of leaks that could lead to moisture ingress inside the door or unwanted noise at higher speeds.

Performance Characteristics and Installation Benefits

The front left door window seal performs several key operational functions:

• stabilizes the window in its guides during raising and lowering,
• prevents water and dust from entering the door interior,
• helps maintain a comfortable noise level in the cabin,
• reduces the risk of accelerated wear on the window regulator mechanism.

For the user, this translates to more predictable window behavior, less stress on moving parts, and improved daily door functionality. For vehicles that have been in use for many years, replacing a worn seal with a correctly fitted part is a simple way to enhance driving comfort without altering the body structure.

Item Condition and Practical Aspects

The offered seal is a used part, allowing for an economical restoration of the window system's functionality while maintaining compatibility with Mercedes vehicle solutions. In practice, this is a beneficial option for users who want to keep their car in good technical condition while controlling repair costs.

Before installation, it is recommended to perform a standard inspection of the adhesion surface in the door and the window guides to fully utilize the seal's properties. A correctly installed part contributes to the stable operation of the entire door assembly and reduces the need for additional adjustments.

Assistance with Part Selection and Additional Information

If you have doubts about compatibility with a specific body version, it is advisable to use the OEM part number or interchangeable numbers visible in the technical specifications section – this allows you to verify compatibility with your particular vehicle. This significantly reduces the risk of purchasing an incorrect part.

If you are planning a comprehensive repair or upgrade of the window and door area in your Mercedes and need other parts from the same category, such as perimeter seals, window trim, or glass guides, check the available parts in the Mercedes Automotive Glass category.

To better plan your repair budget and make informed decisions about when to opt for a used part versus a replacement or original part, consult the guide Original, Aftermarket, or Used – Which Car Parts Offer the Best Value?, which provides practical comparisons of cost and quality.