Window Frame Mercedes ML W166 Front Door Right Trim Black A1667270278

Visual condition of the part

The product shows signs of use visible in the photos.

Window Frame Mercedes ML W166 Front Door Right Trim Black is an original body component from the Window seals and trims group, designed for the right front door frame of the ML W166 generation model. The black frame ensures proper window guidance, stable seating of seals, and maintains the factory door geometry, which translates into acoustic comfort and correct operation of the window lifting mechanism.

Specifications and technical data

• SKU: A1667270278-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1667270278
• Substitutable numbers: A1667270278, A 166 727 02 78
• Location on the vehicle: Front, Right
• Color: Black
• Category: Window Seals, Gaskets & Trims

Purpose and function of the component

The front right door window frame in the Mercedes ML W166 is responsible for the stable mounting of the glass in the guides and the proper positioning of the perimeter seals. This component contributes to the construction of the upper part of the door, influencing:

• the rigidity of the window frame during driving and door closing,
• proper sealing of the glass-to-body contact point,
• precise guidance of the glass in the lifting mechanism,
• reduction of cabin noise and moisture penetration.

By maintaining the factory shape, the frame allows for the preservation of the side body line consistent with the manufacturer's design, which is important for both functional and aesthetic reasons.

Construction, color, and fitment

The presented frame is finished in black, allowing for a cohesive integration with other door and pillar trim elements. The vehicle placement, specified as front – right side, ensures a precise fit to the correct door in the Mercedes ML W166, without the need for modifications or alterations.

The component belongs to the Window seals and trims group, allowing it to work in harmony with perimeter seals, trim strips, and the window mechanism, creating a coherent system responsible for the tightness and acoustic comfort of the interior.

Performance characteristics and installation

The front right door window frame, as a body part, is designed for installation in the factory mounting points of the ML W166 door. This facilitates service work and reduces the time required to replace a damaged component. The used condition of the product allows for an economical repair while maintaining the original design specifications.

Proper frame fitment is particularly important in vehicles equipped with electric window controls – correct glass guidance reduces the load on the lifting mechanism, which can positively influence its durability and operating smoothness.

Application in service practice

Replacing the window frame is recommended in situations where there is deformation of the door frame, problems with window closing, the appearance of leaks, or excessive wind noise at higher speeds. Using an original component dedicated to the ML W166 allows for the restoration of:

• the correct contact line of the glass to the seals,
• the stability of the lifting mechanism,
• acoustic comfort inside the vehicle.

For workshops and individual users, this means the possibility of performing repairs in accordance with the manufacturer's guidelines, without the need to use replacement solutions with uncertain fitment.

Repair scope expansion and additional information

If you are planning a comprehensive repair or upgrade of the door glazing area in your Mercedes and need other components from the same group, such as additional frames, guide rails, or perimeter seals, check out the available parts in the Mercedes window seals and trims category.

If you are simultaneously working on improving the quality of your car's interior and are interested in how to effectively combine aftermarket components, practical tips on selecting cabin equipment can be found in the article Premium interior for half the price: second-hand seats, steering wheels, and multimedia.