Mercedes W204 W207 W212 Steering Wheel Air Module Unit A1728601602

Visual condition of the part 

The product shows signs of use visible in the photos. 

Mercedes W204 W207 W212 Steering Wheel Air Module Unit is an original safety component designed for installation in the steering wheel of Mercedes W204 and W212 class vehicles. The airbag operates in the front cabin area on the driver's side, ensuring controlled inflation in the event of a frontal collision. This solution allows for the restoration of full SRS system functionality after post-accident repairs, while maintaining the factory standards of the Mercedes brand.

Specifications and technical data

• SKU: A1728601602
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1728601602
• Substitutable numbers: A1728601602, A 172 860 16 02, BG
• Location on the vehicle: Front, Left
• Category: Other Interior Parts & Accessories

Purpose and function in the vehicle

The presented airbag is a passive safety system component, mounted in the central part of the steering wheel on the driver's side in the front left zone of the vehicle. It is responsible for reducing the forces acting on the driver's torso and head during a collision, working in conjunction with crash sensors and the SRS control unit.

Thanks to a design tailored to the specific generation of Mercedes, the airbag integrates with the factory steering wheel, maintaining the correct position relative to the steering column, slip ring, and other components of the airbag module.

Compatibility and technical parameters

The airbag has been designed specifically for the interior architecture of the W204 and W212 models, which ensures a proper fit of the shape, mounting points, and electrical connectors. The placement in the front left part of the vehicle means it works with the control system assigned to the driver's side, with a properly calibrated inflation characteristic.

The product has an assigned OEM part number and interchangeable numbers, which facilitates verification of compatibility with a specific equipment version. Before purchasing, it is recommended to compare the markings with the existing component or service documentation to ensure full compatibility with the given vehicle unit.

Condition, quality, and service application

The airbag is offered as a used component, which allows for an economical repair of the safety system while maintaining the manufacturer's original design. Such components are particularly useful for professional post-accident repairs when it is necessary to replace the steering wheel module along with the airbag.

Proper installation should be performed by a qualified service center, following procedures regarding pyrotechnic systems and disconnecting the electrical installation. A correctly installed airbag restores the integrity of the SRS system, enabling proper cooperation with seat belt tensioners and other airbags in the vehicle.

Benefits of using an original steering wheel airbag

Using an original steering wheel airbag in a Mercedes W204/W212 ensures:

• Factory fit to the shape of the steering wheel and steering column, without the need for modifications.
• Proper cooperation with the vehicle's electronics, SRS controller, and crash sensors.
• Consistent visual appearance of the interior, in line with the manufacturer's design.
• The ability to restore full functionality of the safety system after body repairs.

Safety system expansion and technical knowledge

If you are planning a comprehensive repair or upgrade of the safety zone in your Mercedes and need other elements from the same group, such as SRS modules, seat belt tensioners, or additional side airbags, check the available parts in the Other Mercedes category.

For a comparison of solutions used in different brands and sports segments, it is worth reading the analysis of powertrain and chassis designs in high-performance cars – this is discussed in detail in the article Audi RS vs other models – what is hidden under the hood and chassis?, which shows how manufacturers integrate advanced systems with safety and driving dynamics.