Mercedes W164 Window Strip Seal Door Front Left N/S Trim Moulding A1646907380

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W164 Window Strip Seal Door Front Left N/S Trim Moulding is an original body component designed for the front left door, which restores the factory look and consistency of the vehicle's side profile. The chrome finish ensures aesthetic compatibility with other decorative elements, and the design, compliant with Mercedes factory standards, facilitates easy installation. It is a practical solution for post-accident repairs, replacing corroded or damaged mouldings, and refreshing the vehicle's appearance.

Specifications and technical data

• SKU: A1646907380-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1646907380
• Substitutable numbers: A1646907380, A 164 690 73 80
• Location on the vehicle: Front, Left
• Color: Chrome
• Category: Window Seals, Gaskets & Trims

Purpose and function of the trim moulding

The front door window trim moulding on the driver's side is responsible for the aesthetic finishing of the window edge and masking the contact point between the glass and the door panel. This model features a chrome finish, which emphasizes the body style characteristic of the Mercedes W164 and ensures consistency with other decorative body elements.

The component belongs to the Window seals and mouldings group, which means that beyond its visual function, it also supports proper window guidance and protection against contaminants in the critical area where the glass meets the door frame.

Construction, color, and body fitment

The moulding has been designed specifically for installation on the front left door, ensuring its geometry matches the shape of the window frame in this specific location. The chrome surface is prepared for operation in outdoor conditions typical of vehicle use – contact with water, UV radiation, and variable temperatures.

Its original Mercedes origin translates into a proper fit with the door and adjacent body elements, without the need for modifications or adjustments. This is particularly important for body and paint repairs, where maintaining factory gaps and body lines is essential.

Condition, application, and benefits of installation

The item is in used condition, making it an attractive cost-effective alternative to new parts while maintaining the original construction. Replacing the moulding is recommended in situations where the existing element is scratched, deformed, corroded, or was damaged during window removal or door repairs.

The main benefits of using this moulding include:

• restoring the consistent look of the side body line,
• maintaining the factory finish character typical of the W164 series,
• reducing the risk of leaks in the window edge area,
• a more professional result after body and paint repairs.

Integration with other body elements and the window zone

The moulding works in direct proximity to window seals, guides, and other decorative mouldings on the doors and along the window line. Proper fitment of this element is important for:

• maintaining even gaps between the glass and the door frame,
• limiting the ingress of dirt and moisture into the area of the window lifting mechanism,
• maintaining a uniform appearance of chrome accents along the entire length of the vehicle.

As a result, the installation of this moulding is an important stage in the comprehensive renovation of the window and door zone in a Mercedes W164, especially after window replacement or repairs to sills and pillars.

Expanding the scope of repairs within mouldings and seals

If you are planning a comprehensive repair or upgrade of the window zone in your Mercedes and need other elements from the same group, such as additional mouldings, window seals, or door edge trims, check the available parts in the Mercedes window seals and mouldings category.

When planning broader service work, it is also worth taking care of other vehicle systems. You can read about the impact of high temperatures on the cooling system and how used components can help optimize operating costs in our guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings.