Description
Mercedes-Benz S-Class W221 Rear Right O/S Side Shoulder Airbag is an original side safety system component designed for installation in the rear right section of the vehicle body. Thanks to its factory-fit design for the door structure, it ensures consistency with other body components and maintains the protection parameters specified by the manufacturer. This is a solution for users who expect a technically correct repair following a collision or when replacing side passenger zone components.
Specifications and technical data
- SKU: A2218600605
- Mark: Mercedes (Genuine OE)
- Condition: Used
- OEM Part Number: A2218600605
- Substitutable numbers: A2218600605, A 221 860 06 05, KZ
- Location on the vehicle: Rear, Right
- Category: Doors & Door Skins
Purpose and vehicle placement
The presented side airbag is designed for installation in the rear right part of the vehicle, in the area of the door and adjacent body panels. Its placement in this zone allows for the protection of the passenger sitting in the rear on the passenger side, working in conjunction with the side body structure and other safety system components.
As a part from the Doors and door panels group, the component contributes to a complete side protection system, which is designed to limit the forces acting on the passenger’s body in the event of an impact and reduce the risk of injury.
Technical and functional characteristics
The side airbag has been developed specifically for Mercedes W221 class models, maintaining the geometry and mounting points provided by the manufacturer. This allows for precise positioning within the door structure and proper routing of the installation, which is crucial for correct deployment in an emergency situation.
The element works with the factory airbag control unit, crash sensors, and the vehicle’s electrical harness. Proper fitment to the specific body model allows for maintaining the correct inflation sequence and response time, which is essential from the perspective of passive safety.
Product condition and service application
The airbag is offered as a used part, which provides a cost-effective solution for users seeking a structurally compliant alternative to new components. Such elements are often chosen for post-accident repairs when the priority is to restore the full functionality of the safety system at reasonable service costs.
Due to the nature of the component, installation in a specialized service center that has experience working with airbag systems and appropriate safety procedures is recommended. Proper installation has a direct impact on the effectiveness of the entire system.
Benefits of using an original side airbag
- Factory fit for Mercedes W221 – preservation of geometry, mounting points, and compatibility with the door structure.
- Consistency with the existing vehicle safety system – compatibility with sensors and the control unit.
- A service solution allowing for the restoration of side protection in the rear right part of the cabin.
- An economical alternative to new elements while maintaining the proper protective function.
Related body components and further expansion
In the case of post-accident repairs in the rear right part of the body, it is often also necessary to verify the condition of the door panels, reinforcements, and other components of the side passenger zone. Consistent selection of elements from the same group allows for a technically correct reconstruction of the protective structure and reduction of stress within the repaired area.
If you are planning a comprehensive repair or upgrade of the door zone in your Mercedes and need other elements from the same group, such as panels, reinforcements, or door frames, check the available parts in the Mercedes Doors and door panels category.
Additional information and support for selection
When selecting used safety system components, many users compare OEM solutions with new replacements, analyzing the cost-to-functionality ratio. A proper understanding of the differences between new and used parts helps in choosing the configuration best suited to a specific repair case.
To better assess which solution will be appropriate for your service situation, it is worth reading our guide: New or used? A comparison of car part costs and quality.






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