Mercedes-Benz S W220 Backrest Front Seat Adjuster Left Motor Actuator 1-1366-03

Mercedes-Benz S W220 Backrest Front Seat Adjuster Left Motor Actuator is a precision electric actuator responsible for the smooth adjustment of the backrest position. This component ensures comfortable, stable back support for the driver or passenger, improving ergonomics and driving comfort in the S-Class luxury sedan. Thanks to the factory design intended for a specific model, you maintain the original functionality of the seat system and the consistency of the entire seat adjustment mechanism.

Specifications and technical data

• SKU: A2208202742
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2208202742
• Substitutable numbers: A2208202742, A 220 820 27 42, 1-1366-03, EM
• Location on the vehicle: Front, Left
• Category: Seats and Sofas

Purpose and function in the seat system

The presented backrest adjustment motor operates in the front left seat area, responsible for changing the backrest tilt angle. It is a key element of the mechanism that works with the seat rails and gears, enabling:

• precise adjustment of the backrest position to the user's silhouette,
• stable maintenance of the set position while driving,
• consistent cooperation with other electric seat adjustments.

Thanks to this, the seat system in the Mercedes S-Class W220 maintains its comfortable characteristics, and the driver is provided with ergonomic driving conditions even on long journeys.

Benefits of using the original adjustment motor

Using a dedicated backrest adjustment motor in the front left seat allows you to maintain the factory operating parameters of the entire mechanism. You receive, among others:

• proper fit to the seat structure and rails,
• appropriate operating characteristics – speed, torque, direction of movement,
• compatibility with the vehicle's electrical installation and controls.

This solution is particularly important for repairs where you want to maintain the consistency of the seat adjustment system and avoid problems with installation or improper operation of the mechanism.

Condition of the component and practical application

The backrest adjustment motor comes from the Seats and benches category, which means it is an integral part of the interior equipment responsible for seating comfort. As a used component, it is an attractive solution for servicing or interior restoration when the factory mechanism in your car has worn out or been damaged. Replacing it with the original actuator allows you to restore:

• efficient operation of the electric backrest adjustment,
• daily comfort of using the seat,
• functionality in accordance with the vehicle manufacturer's specifications.

Support for interior upgrades and additional materials

If you are planning a broader interior tuning of your Mercedes S-Class W220 – e.g., replacing seats, steering wheel, or other equipment elements – it is worth checking out practical tips on selecting and installing used components. Detailed advice can be found in the article Car interior tuning with Global Parts, which discusses how to reasonably use second-hand seats and other elements to improve cabin comfort and functionality.

If you are planning a comprehensive repair or upgrade of the seating area in your Mercedes and need other elements from the same group, such as frames, sliding mechanisms, or additional adjustment modules, check out the available parts in the Mercedes seats and benches category.