Mercedes W176 Seat Motor Front Right O/S Adjustment Drive Actuator 0390203674

Mercedes W176 Seat Motor Front Right O/S Adjustment Drive Actuator is an original seat adjustment component designed for installation on the front, right side of the vehicle. It provides precise drive for the seat mechanism, which translates into comfortable and repeatable adjustment of the driver's or passenger's position. This is a practical solution for users who want to restore full functionality to the seat in their Mercedes without investing in a new module.

Specifications and technical data

• SKU: 390203674
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: 0390203674
• Substitutable numbers: 0390203674, 0 390 203 674
• Location on the vehicle: Front, Right
• Category: Additional Seat Parts

Purpose and function of the seat motor

The presented motor is responsible for driving one of the seat adjustment mechanisms in models from the W176 family. It is mounted in the seat area on the front right side, where it works with the seat gears and rails. Thanks to its stable operation, the drive enables smooth setting changes, which improves ergonomics and allows for precise adjustment of the seat position to the user's physique.

The item belongs to the Other seat parts group, which means it is a specialized sub-assembly supporting interior comfort and functionality, while remaining compatible with the vehicle's factory installation.

Benefits of using an original Mercedes component

The seat motor sourced from a dismantled Mercedes vehicle retains its factory operating characteristics and mounting method, which facilitates installation in place of a worn or damaged drive. Using an original solution reduces the risk of problems with fitment, play, or improper interaction with the seat mechanics.

• factory mounting points adapted to the W176 seat structure,
• preservation of the original mechanism operating geometry,
• consistency with the vehicle's electrical installation in the seat area.

Thanks to this, replacing a worn drive with a functional motor allows you to restore adjustment comfort without interfering with the seat structure or wiring harness.

Vehicle placement and installation aspects

The motor is intended for installation in the front – right side area, which is important both when selecting parts and when planning service work. Correct placement on the vehicle ensures proper cooperation with the rails and adjustment mechanism of the specific seat.

During installation, it is worth paying attention to:

• correct positioning of the drive relative to the seat gears,
• safe routing of power cables within the seat area,
• checking the mechanism's operation after reassembling the entire seat.

Such an approach allows for maintaining the stability of the seat structure and ensuring repeatable, predictable drive operation in daily use.

Selecting a used seat motor by OEM number

When choosing this type of component, it is crucial to match it by the OEM part number and interchangeable numbers to guarantee full compatibility with the specific seat version and vehicle installation. It is worth comparing the markings from the dismantled part with the data in the specification, which minimizes the risk of an incorrect purchase.

To better prepare for purchasing a used sub-assembly, it is worth using practical expert tips – you will find them in the article No more bad purchases! How to professionally select used car parts, saving time and nerves, where the importance of OEM number compatibility is discussed, among other things.

Expanding the modernization of the seat area in a Mercedes

If you are planning a comprehensive repair or modernization of the seat area in your Mercedes and need other elements from the same group, such as rails, adjustment mechanisms, or additional drive modules, check the available parts in the Other Mercedes seat parts category.

In the case of older models, where the availability of new components is sometimes limited, a guide on using parts from dismantling may also be helpful – more information can be found in the material No parts at the dealership? How to deal with repairing older models using parts from dismantling.