Mercedes X166 Rear Door Window Lifter Regulator Motor Right O/S A1669060601

Mercedes X166 Rear Door Window Lifter Regulator Motor Right O/S is a factory component from the Window regulators and motors group, designed for operating the rear right window in Mercedes vehicles. The original design ensures proper integration with the vehicle's electrical system and stable operation of the window lifting and lowering mechanism, which translates into comfort during daily use.

Specifications and technical data

• SKU: A1669060601
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1669060601
• Substitutable numbers: A1669060601, A 166 906 06 01, 0130822756, 0 130 822 756
• Location on the vehicle: Rear, Right
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The presented component is responsible for driving and controlling the window movement in the rear right door, acting as an integrated window regulator motor. The element has been designed specifically for the X166 series body, ensuring correct mounting geometry and compatibility with the factory comfort control system. Its placement in the rear right section of the body means that the proper operation of this component has a direct impact on passenger comfort and cabin sealing.

Construction and performance parameters

The window lifter with the regulator motor constitutes a complete drive assembly that transfers torque to the mechanism guiding the window in the door. The design provided by the vehicle manufacturer ensures:

• drive force properly matched to the weight of the window and door geometry,
• smooth movement across the full range of opening and closing,
• compatibility with the vehicle's factory electrical safety systems.

Thanks to the use of an original solution from the Window regulators and motors group, the correct operating characteristics are maintained, and the risk of improper operation of the comfort system is limited.

Benefits of using an original component

Using this window lifter in a Mercedes X166 allows for restoring the factory operating conditions of the window mechanism without the need for system modifications. Key advantages include:

• Full integration with vehicle electronics – proper cooperation with control modules and door buttons.
• Correct mechanical fit – compliance with factory mounting points in the rear right door.
• Stable operation under typical operating conditions – designed for the loads occurring in this body model.

The component comes from a Mercedes vehicle, which helps maintain the technical consistency of the entire window lifting system and facilitates future diagnostics.

Condition, verification, and selection by part numbers

The offered component is in used condition, meaning it has been removed from a vehicle and verified for suitability for further use. This type of solution is often chosen as a reasonable compromise between repair costs and maintaining original build quality. When selecting, it is recommended to use the vehicle manufacturer's markings and interchangeable numbers to ensure full compatibility with the specific equipment version.

If you want to better understand how to safely use the second-hand parts market, including how to interpret OEM and reference markings and what the cost-to-durability ratio looks like, the following expert guide will be helpful: Why it is worth buying used gearboxes and engines – facts instead of myths. The selection procedures by part numbers contained therein can be analogously used when selecting other components, including window system elements.

Expanding repairs within the window system

If you are planning a comprehensive repair or upgrade of the door and window area in your Mercedes and need other elements from the same group, such as additional window drives, control motors, or complete regulator assemblies, check the available parts in the Mercedes Window regulators and motors category.

Summary of application in Mercedes X166

Mercedes X166 Rear Door Window Lifter Regulator Motor Right O/S is a solution intended for users who want to restore the proper operation of the rear right window while maintaining factory parameters. Choosing an original element from the Window regulators and motors group promotes trouble-free installation, correct cooperation with the vehicle's electronics, and predictable mechanism behavior in daily use.