Mercedes-Benz S-Class W221 Rear Left N/S Side Shoulder Airbag A2218600505

Mercedes-Benz S-Class W221 Rear Left N/S Side Shoulder Airbag is a component designed for the rear left side of the vehicle body, engineered to maintain a high level of passenger safety. This component from the Doors and door panels group comes from a Mercedes vehicle and provides a solution for users seeking technically compatible, original equipment for the W221 model.

Specifications and technical data

• SKU: A2218600505
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2218600505
• Substitutable numbers: A2218600505, A 221 860 05 05, KZ
• Location on the vehicle: Rear, Left
• Category: Doors & Door Skins

Purpose and function in the vehicle

The rear left airbag in the Mercedes W221 operates in the side body zone, in the area of the doors and adjacent sheet metal components. Its task is to work with the factory passive safety system to reduce the impact of a collision in the rear part of the cabin on the driver's side.

The vehicle placement defined as rear – left side allows for clear identification of the mounting position and facilitates the selection of the correct component in the event of a replacement after a road incident or during comprehensive post-accident repairs.

Compatibility and fit for Mercedes W221

The offered airbag has been designed specifically for the S-Class W221 generation body, taking into account the geometry of the doors, the structure of the pillars, and the factory mounting points. This ensures:

• proper fitment with upholstery elements and door panels,
• correct routing of the electrical harness within the door and side body section,
• compatibility with the vehicle's factory safety system control unit.

Such fitment reduces the need for installation modifications and allows the body structure to be maintained in the configuration intended by the manufacturer.

Characteristics of the used component

The airbag comes from a used vehicle, which is significant from an economic perspective regarding repairs. Choosing such a solution allows for reducing the cost of restoring the safety system's functionality while maintaining the original design and purpose of the element.

As a part from the Doors and door panels group, the component works with the side body structure, so when selecting it, it is worth paying attention to the compatibility of the placement (rear, left side) and ensuring that the installation is carried out in accordance with the service procedures provided for the given model.

Application in the repair and modernization process

The rear left airbag for the Mercedes W221 will be particularly useful in situations where:

• replacement of the element is necessary after the safety system has been deployed,
• post-accident repair of the rear body section on the driver's side is being conducted,
• comprehensive vehicle restoration is being carried out while maintaining original design solutions.

Thanks to the precise determination of the position on the vehicle and its belonging to a specific model generation, the part facilitates maintaining the technical consistency of the entire safety system.

Expanding the scope of repair and technical knowledge

If you are planning a comprehensive repair or modernization of the door zone in your Mercedes and need other elements from the same group, such as panels, reinforcements, or additional structural elements, check the available parts in the Mercedes Doors and door panels category.

When working with vehicle safety, it is also worth expanding your knowledge on selecting used components – especially elements of systems responsible for passenger protection. Practical tips on assessing the condition and principles of safe purchasing can be found in the article Second-hand braking system: how to safely select discs, calipers, and ABS?, which can serve as a useful supplement to your knowledge also when working with other key vehicle systems.