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

The Mercedes W164 Left Door Seal Rear Left Door Glass Seal is an original part from the Door Seals group, designed for installation in the rear left door of Mercedes W164 vehicles. Its precisely fitted sealing profile helps reduce noise, improve cabin airtightness, and maintain stable glass guidance in the track.

Specifications and technical data

• SKU: A1647350725
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1647350725
• Substitutable numbers: A1647350725, A 164 735 07 25, KZ
• Location on the vehicle: Rear, Left
• Category: Door Seals

Vehicle Application and Placement

The presented seal is designed for installation in the rear section, on the left side, in the passenger door. It is responsible for sealing the perimeter of the glass and ensuring its proper guidance along the edges during raising and lowering. Thanks to its dedicated shape, it works with the W164 door structure, providing stable support for the glass and reducing the risk of it becoming crooked.

Function and Benefits of Installation

A functional door glass seal in the rear door has a direct impact on acoustic comfort and the protection of the vehicle's interior. A properly selected part:

• reduces the penetration of wind noise at higher speeds,
• limits the possibility of water and moisture entering the door interior,
• supports the smooth operation of the window regulator mechanism,
• helps maintain the stable position of the glass relative to the door frame.

For the user, this means more predictable operation of the window regulator and better protection of upholstery and interior components against moisture.

Characteristics of an Original Mercedes Part

The seal comes from the line of parts intended for Mercedes models, which translates to maintaining factory geometry and compatibility with the W164 door structure. The original rubber profile is adapted to the door frame's contours, ensuring a predictable installation process without the need for modifications or adjustments of universal replacements.

A part from this group is particularly recommended in situations where the existing seal shows signs of wear, such as leaks, deformations, or loss of elasticity, which can result in increased noise and poorer window operation.

Condition and Service Application

The seal is offered as a used part, allowing for an economical repair of the door area while maintaining the original structural specification. This type of solution is often chosen in professional workshops specializing in Mercedes vehicle service when preserving compliance with the factory design while optimizing costs is a priority.

Before installation, a standard inspection of the mating surfaces in the door and the glass track is recommended to ensure proper seating of the seal and full utilization of its sealing properties.

Comprehensive Door Area Service for Mercedes W164

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and require other parts from the same group, such as perimeter seals, frame seals, or additional guide profiles, check the available parts in the Mercedes Door Seals category.

When choosing between refurbished and used original parts, it is worth analyzing the specifics of the repair and the desired final outcome. The article Refurbished or Used Original – Which Part to Choose for Repair?, which discusses the practical differences between these solutions in the context of real vehicle repairs, may be helpful.