Mercedes X164 Rear Window Regulator Cover Seal Right O/S A1647300226

Mercedes X164 Rear Window Regulator Cover Seal Right O/S is a precisely fitted component designed to protect and seal the right rear window regulator mechanism in the Mercedes body. It is responsible for effectively isolating the mechanism from external factors, which promotes quiet operation of the system and limits the risk of moisture ingress. By maintaining the factory geometry, the seal ensures the correct operation of the window and proper fitment of the upholstery elements.

Specifications and technical data

• SKU: A1647300226
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1647300226
• Substitutable numbers: A1647300226, A 164 730 02 26
• Location on the vehicle: Rear, Right
• Category: Window Motors & Regulators

Purpose and function of the seal

The described rear right window regulator cover seal has been designed specifically for the Mercedes X164 series body, taking into account the characteristic construction of the rear doors. Its tasks include:

• sealing the working area of the window regulator mechanism,
• limiting the ingress of water and contaminants into the interior of the door,
• stabilizing the mechanism cover relative to the door panel and upholstery,
• maintaining the correct operation of the window within the guide rails. Thanks to this, the rear right window regulator maintains its functionality in the long term, and the risk of corrosion, seizing, or accelerated wear of moving parts is reduced.

Compatibility and fitment for the X164 body

The seal is intended for installation in the rear right part of the body, at the location of the window regulator mechanism. The design corresponds to the factory solution used in the Mercedes X164, which translates into:

• secure guidance of the mechanism cover relative to the mounting hole,
• proper adhesion to the structural edges of the door,
• maintenance of the original contact line with upholstery and body panel elements. Such fitment is particularly important in vehicles equipped with electric window regulators and motors, where tightness and the absence of stress in the mounting zone affect the overall operating quality of the system.

Characteristics of the used component

The offered seal comes from dismantling, which means it is a used part, yet it retains the functionality required for further operation. In practice, this means that:

• the geometry of the seal remains adapted to the factory mounting points,
• the material retains sufficient flexibility to ensure proper sealing,
• the element can be used as a replacement for a worn or damaged seal. Choosing a used component of this type is a sensible solution when servicing the window mechanism, especially when the priority is to maintain the original design at controlled repair costs.

Benefits of using the original window regulator cover seal

The use of a dedicated seal in the rear right part of the body brings a number of practical operational benefits:

• Mechanism protection – limiting the contact of moving parts with moisture and dirt, which promotes smooth window operation.
• Noise reduction – proper sealing of the working area reduces the penetration of noise from inside the door into the cabin.
• Stable cover mounting – the seal acts as a spacing and damping element, improving the fit of the cover to the door structure.
• Consistency with factory design – maintaining the original Mercedes solution facilitates subsequent service and diagnostics of the window lifting system.

Professional selection and additional materials

To correctly select consumables and service parts for a specific vehicle, it is worth using procedures based on identification by factory numbers and vehicle data. A detailed discussion of this approach, along with examples and an analysis of the cost-effectiveness of using components from the secondary market, can be found in the guide Why it is worth buying used gearboxes and engines – facts instead of myths, which describes universal principles that are also useful when selecting other subassemblies. If you are planning a comprehensive repair or upgrade of the side window and door area in your Mercedes and need other elements from the same group, such as guides, covers, or complete window regulator mechanisms, check the available parts in the category Mercedes window regulators and motors.