Mercedes W166 X166 Window Regulator Motor Door Panel Front Right O/S A1667200279

Mercedes W166 X166 Window Regulator Motor Door Panel Front Right is an original component from the Window regulators and motors group, designed for precise operation in the front right door of Mercedes SUV vehicles. This solution is created to maintain the factory functionality of the electric window lift, stable mechanism operation, and consistency with the vehicle's electrical system.

Specifications and technical data

• SKU: A1667200279
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1667200279
• Substitutable numbers: A 166 720 02 79, A1667200279, A 166 720 12 02, A1667201202
• Location on the vehicle: Front, Right
• Part type: Regulator & Motor Assembly
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The presented window motor integrated with the door panel is dedicated for installation in the front – right side of the body, which ensures proper fitment to the door structure and window guides in Mercedes W166 and X166 models. The component is responsible for driving the electric window lifting and lowering mechanism, working in conjunction with the factory comfort control and anti-pinch protection, if present in the specific vehicle configuration. Thanks to the preservation of the original mounting geometry and the appropriate shaping of the door panel, the installation is carried out in an orderly manner, without the need for modifications to the door structure or electrical installation. This is particularly important for post-accident repairs and the replacement of worn or damaged window drives.

Construction, fitment, and performance parameters

The window motor with the door panel has been designed as a complete solution mounted in the inner part of the door, which reduces the number of connections and potential points of failure. The use of an original Mercedes brand part means maintaining the correct torque, window operating speed, and compatibility with factory control modules. Key benefits of using this component include:

• factory fitment to the front passenger side door structure,
• consistency with original wiring and electrical connectors,
• stable window operation throughout the full range of motion,
• maintenance of operating comfort from the door buttons and central window control functions.

Condition, verification, and service application

The component is offered in used condition, which in practice means it comes from vehicle dismantling and has been verified for suitability for further use. This type of part is particularly attractive for repairs where a combination of reasonable costs and maintaining the manufacturer's original specifications is important, without the need to resort to replacements with uncertain parameters. The window motor with the door panel will work well both for standard replacement of a worn drive and in the case of post-collision repairs, when it is necessary to restore full functionality of the front right door. Using an original solution allows for reducing the risk of problems with window closing, incorrect limit switch operation, or errors in comfort systems.

Mercedes window regulators and motors – expansion and modernization

If you are planning a comprehensive repair or modernization of the door area in your Mercedes and need other elements from the same group, such as window drives, control modules, or complete guide mechanisms, check the available parts in the Mercedes window regulators and motors category. When selecting electrical and drive components in vehicles of this brand, it is worth following the manufacturer's markings and compatibility with the equipment of the specific body version. Procedures based on vehicle identification numbers and part markings can be helpful – described in more detail in the guide Why it is worth buying used gearboxes and engines – facts instead of myths, where practical principles of component selection by VIN and OEM are discussed.

Why it is worth choosing an original used Mercedes component

Choosing an original, used window motor with a door panel is a reasonable compromise between the cost of repair and maintaining the factory quality of the window mechanism's operation. You receive a part designed specifically for a given body type, with appropriately selected electrical and mechanical parameters, which translates into predictable window behavior in daily operation. If you want to learn more about the advantages of using original components from dismantling in cars of this brand, it is worth reading the article Mercedes – comfort, prestige, and durability. Why does it pay off to choose original used parts?, which discusses how to maintain a high level of comfort and durability without excessively burdening the service budget.