Mercedes-Benz M-Class ML W164 Front Left Door Weathersrip Seal N/S A1647201378

Mercedes-Benz M-Class ML W164 Front Left Door Weathersrip Seal is a precisely fitted component from the Door upholstery group, designed for the front left door in Mercedes W164 series vehicles. It is responsible for sealing the door edge, reducing noise, and protecting the interior from moisture and contaminants, ensuring a stable, factory-standard fitment of the door panel.

Specifications and technical data

• SKU: A1647201378
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1647201378
• Substitutable numbers: A1647201378, A 164 720 13 78
• Location on the vehicle: Front, Left
• Category: Door Panels

Purpose and function of the component

The described weatherstrip seal is designed for installation in the front left door area, where it acts as a guide and seal at the interface between the door metal and the bodywork. Thanks to its properly shaped profile, it supports correct door closing, reduces vibrations, and helps maintain the proper geometry of the edge. A properly selected seal influences the acoustic comfort of the cabin by limiting wind noise and the sounds of hinge operation.

Construction and fitment for Mercedes W164

The strip has been constructed specifically for the W164 platform, which translates into a very good fit with factory mounting points and the door crease lines. The element's profile is adapted to the shape of the driver's side front door frame, which facilitates installation and allows for maintaining the original edge line. The applied seal geometry supports even pressure along the entire length, which helps maintain tightness under typical operating conditions.

Performance characteristics and advantages

As a component from the body and interior group, the door weatherstrip seal affects several key aspects of vehicle operation:

• limiting the ingress of moisture and fine contaminants into the sill area and door interior,
• improving acoustic comfort by reducing wind noise at higher speeds,
• stabilization of the door edge and support for even closing,
• maintaining an aesthetic contact line between the door and the body.

Thanks to the preservation of the original geometry, the element works well with factory hinges and the lock, which promotes even pressure along the entire length of the edge. This solution is particularly beneficial when operating in variable weather conditions, where resistance of the door area to water and dirt is important.

Condition, origin, and economic aspect

The offered strip is a used component, which allows for combining the preservation of the original assembly specification with a favorable purchase cost. In the case of premium class bodies, such as the Mercedes W164, the use of original components from the secondary market often constitutes a reasonable compromise between quality and budget, especially during comprehensive work within the door and upholstery area.

If you want to better understand the benefits of choosing original used components for your car, it is worth reading our guide: Mercedes – comfort, prestige, and durability. Why is it worth choosing original used parts?.

Expansion and modernization of the door area

If you are planning a comprehensive repair or modernization of the door area in your Mercedes and need other elements from the same group, such as door cards, trim panels, or additional weatherstrip seals, check the available parts in the Mercedes door upholstery category.

Summary

Mercedes-Benz M-Class ML W164 Front Left Door Weathersrip Seal is a practical choice for users who want to restore the proper tightness and functionality of the front left door while maintaining compliance with the vehicle's factory design. A properly selected element from this group allows for improving driving comfort, reducing noise, and taking care of the durability of the sill area and interior, without the need to interfere with the original architecture of the Mercedes body.