Mercedes C140 Window Regulator Lifter Motor Front Right O/S A1406700203

Mercedes C140 Window Regulator Lifter Motor Front Right O/S is an original component from the Window regulators and motors group, designed for precise operation in the front right section of the vehicle body. It ensures stable window guidance, proper support for the mechanism, and repeatable operation of the lifting and lowering system, which translates into comfort when using your Mercedes vehicle.

Specifications and technical data

• SKU: A1406700203
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1406700203
• Substitutable numbers: A1406700203, A 140 670 02 03
• Location on the vehicle: Front, Right
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The presented component is responsible for power transmission in the window lifting mechanism in the front right door. Its placement in the front, right zone means the element operates in a critical area of the body, where movement repeatability, proper window guidance, and resistance to loads resulting from daily use are essential.

A properly selected regulator from this group of components reduces the risk of jamming, uneven window movement, or excessive play in the guides. This is important both for acoustic comfort inside the cabin and for door sealing during rain or vehicle washing.

Benefits of using an original Mercedes component

Using a component from the Mercedes brand allows you to maintain the factory operating parameters of the window mechanism. The original geometry of the mounts and guides facilitates installation in the door and minimizes the need for additional adjustments after installation.

Key advantages include:

• maintaining the correct geometry of window guidance in the front right door,
• compatibility with the factory mounting system in the body,
• consistency with other window lifting system components from the same model series.

Operational and installation characteristics

The element from the Window regulators and motors category operates in an environment exposed to temperature changes, humidity, and vibrations from the body. The design intended for a specific mounting position in the vehicle allows for stable attachment and proper transfer of loads from the window to the door structure.

When replacing, it is recommended to:

• check the condition of the guides and mounting points in the door,
• verify the correct operation of the window after installation across the full range of motion,
• verify cooperation with other components of the window control system.

Condition and selection of parts

The component is offered in used condition, which allows for economical repair while maintaining the manufacturer's original specifications. This solution is particularly beneficial for servicing vehicles where both compliance with the factory design and control of operating costs are important.

When selecting the element, it is worth using the manufacturer's markings and reference numbers to ensure full compatibility with the specific body version and equipment. In case of doubt, it is helpful to compare the design of the mounts and the path of the guides with the removed element.

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 lifting mechanisms, drives, or guides, check the available parts in the Mercedes Window regulators and motors category.

Technical support and expert knowledge

When selecting consumable elements for vehicle systems – including components from the regulator and drive group – it is worth relying on proven identification procedures based on manufacturer markings and the configuration of the specific car. A detailed discussion of the principles of selecting parts by identification numbers, as well as practical tips on the cost-effectiveness of using used parts, can be found in the article Why it is worth buying used gearboxes and engines – facts instead of myths, which presents an approach based on data and service experience.