Mercedes X164 Quarter Window Moulding Trim Seal Rear Right O/S A1646902087

The Mercedes X164 Rear Right Body Glass Seal is a precise body component designed for the rear right glass in Mercedes vehicles. It ensures a watertight seal between the glass and the body, reducing noise, vibrations, and the ingress of water and dirt into the vehicle's interior. A used original part is a sensible choice for drivers who expect factory-fitment and stable performance parameters.

Specifications and technical data

• SKU: A1646902087
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1646902087
• Substitutable numbers: A1646902087, A 164 690 20 87
• Location on the vehicle: Rear, Right
• Category: Window Seals, Gaskets & Trims

Purpose and Vehicle Placement

This seal is designed for installation in the rear right section of the body, around the body glass. This placement requires a specifically contoured shape and appropriate rigidity to:

• maintain stable positioning of the glass relative to the body frame,
• minimize vibration transfer to the glass during driving,
• reduce the risk of leaks in the critical rear corner of the vehicle.

Thanks to its tailored fit for the specific mounting position, the seal helps maintain correct glass geometry and ensures proper closing of the door or tailgate in the adjacent area.

Technical and Functional Characteristics

The seal, categorized under Window and Trim Seals, performs several key operational functions in the body:

• creates a barrier against rainwater and moisture,
• limits the ingress of dust and fine debris,
• supports interior acoustic insulation, reducing wind noise,
• stabilizes the glass edge against the body.

The original design developed for Mercedes vehicles ensures appropriate material flexibility, which facilitates installation and allows for even adhesion to the body and glass surfaces. This minimizes the risk of point stresses that could affect glass durability or lead to cracking and creaking noises during driving.

Benefits of Using an Original Mercedes Seal

Using an original rear right body glass seal in a Mercedes offers a range of practical benefits:

• Factory Geometric Fit – the shape and profile of the seal are adapted to the specific body area, simplifying installation and reducing the need for additional adjustments.
• Consistency with Other Body Elements – the seal works in conjunction with existing trims, glass, and finishing elements, maintaining the vehicle's original styling line.
• maintaining adequate sealing in the rear passenger cabin,
• reducing the risk of window fogging caused by uncontrolled moisture ingress.

A used original part allows for high functionality while reducing costs compared to new components, which is particularly important for comprehensive bodywork.

Application in Service and Body Repairs

The rear right body glass seal is suitable for both standard replacement of worn parts and for bodywork and painting operations where glass removal and reinstallation are necessary. In workshop practice, such a component is used, among other things, for:

• addressing leaks in the rear of the body,
• eliminating noises around the glass during driving,
• restoring proper component fit after accident repairs.

For workshops specializing in the Mercedes brand, using an original seal facilitates consistent repair quality and reduces the risk of complaints related to ill-fitting aftermarket parts.

Expanding Work in the Area of Vehicle Glass and Trim

If you are planning comprehensive repairs or upgrades to the glazing and body trim areas of your Mercedes and need other parts from the same group, such as additional side window seals, trim strips, or window frame seals, check the available parts in the Mercedes Window and Trim Seals category.

If you are considering broader vehicle modifications and want to better utilize the potential of used components, an article describing a practical approach to selecting body and equipment parts may be helpful – you can find it here: Best Used Parts for Your Car Tuning.