Mercedes W166 Rear Right O/S Window Strip Seal A1667350465

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W166 Rear Right O/S Window Strip Seal is an original body component from the Door seals group, designed for installation in the rear right section of the vehicle body. The precisely shaped profile ensures a tight fit against the window and door frame, which translates into stable operation of the window mechanism and reduces noise and moisture in the cabin.

Specifications and technical data

• SKU: A1667350465
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1667350465
• Substitutable numbers: A1667350465, A 166 735 04 65
• Location on the vehicle: Rear, Right
• Category: Door Seals

Purpose and fitment

The seal has been designed specifically for the rear right door window in W166 series models, taking into account factory assembly tolerances. The appropriate edge profiling and correct material stiffness allow for secure seating in the door slot, without the need for modifications or forced fitting.

As a component originating from a Mercedes vehicle, the seal maintains consistency with the factory door frame geometry, which minimizes the risk of leaks after installation and facilitates proper window guidance in the channel.

Technical function in the bodywork

The rear right window seal performs several key operational functions:

• limits the penetration of water and moisture into the door interior and cabin,
• stabilizes the window during raising and lowering,
• reduces wind noise at higher speeds,
• helps maintain proper pressure of the window against the door frame.

Thanks to maintaining the original design, the component works with the factory window lifting mechanism without causing additional resistance or accelerated wear of the guides.

Characteristics of the used component

The offered seal is a used part, sourced from dismantling, which allows for maintaining factory specifications while reducing repair costs. This type of component is particularly beneficial when servicing older vehicles, where the priority is to maintain the original design within a reasonable budget.

Choosing a used OEM component is often preferred in situations where aftermarket replacements do not provide proper fitment with the door frame or are characterized by a different rubber compound hardness, which can affect the tightness and interior acoustics.

Benefits of using an original seal

Using an original window seal in the rear right part of the body provides measurable operational benefits:

• stable window guidance – lower risk of jamming and uneven mechanism operation,
• better acoustic insulation – reduction of wind noise and rattling from the door area,
• protection of the door interior – reduced exposure of metal components to corrosion and damage to the electrical system.

Precise fitment to the rear right body zone (Rear - right) facilitates installation and shortens service time, which is important for both workshops and individual users.

Support with selection and additional information

Before purchasing, it is worth verifying the compatibility of the seal with the specific equipment version and vehicle year, using identifiers such as SKU, OEM part number, or available interchangeable numbers. This helps avoid installation problems and ensures full compatibility with the given door configuration.

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

For a better understanding of how using used OEM components affects vehicle downtime in the workshop and repair costs, it is worth reading the article: Availability of car parts off-the-shelf vs. repair time – how used OEM parts shorten workshop stays?.