Seat Air Module Mercedes W204 W207 Coupe Front Right O/S Side Air A2078605402

Seat Air Module Mercedes W204 W207 Coupe Front Right O/S Side Air is an original passenger seat safety system component, designed for installation in the front right section of the interior. This specialized seat airbag, belonging to the Other seat parts category, provides proper side and thigh protection during a collision, in accordance with Mercedes' factory safety concept. Choosing a used OEM component allows for maintaining the structural integrity of the seat and compatibility with the vehicle's electrical system.

Specifications and technical data

• SKU: A2078605402
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2078605402
• Substitutable numbers: A2078605402, A 207 860 54 02
• Location on the vehicle: Front, Right
• Category: Additional Seat Parts

Purpose and function in the safety system

The seat airbag mounted on the front right side is responsible for controlled deployment in the seat cushion and side area of the passenger seat. The component works in conjunction with the airbag control module and crash sensors, forming a cohesive protective system. As a result, in the event of a collision, the energy acting on the passenger's body is distributed over a larger surface area, which limits the risk of injury in the lower and side torso zones.

This type of solution is particularly important in premium vehicles, where the design of the seat and passive safety systems is engineered as a whole. Using a dedicated seat airbag ensures the correct inflation timing parameters and gas generator discharge direction.

Mounting compatibility and positioning

The presented component is designed for installation in the front – right side zone, i.e., the passenger seat. The airbag design is matched to the geometry of the seat cushion and backrest in the Mercedes W204 Coupe model, which facilitates integration with the upholstery and factory mounts. This makes it possible to maintain the original seat line and the correct alignment of the cover seams, through which the material tears in a controlled manner when the airbag is deployed.

The used OEM component ensures consistency with the existing electrical harness, connectors, and SRS system controller. In practice, this translates into reducing the need for installation modifications and facilitates diagnostics after installation, e.g., using a factory tester.

Benefits of using an original seat airbag

Using an original seat airbag in a Mercedes W204 Coupe offers a number of practical advantages:

• maintaining the factory performance characteristics of the SRS system in the passenger seat zone,
• perfect fit of shape and mounting points to the seat structure,
• compatibility with original electrical connectors and the vehicle harness,
• consistency with other components of the airbag and seatbelt tensioner system.

For the user, this means the ability to restore full functionality of the safety system after a collision or seat replacement, without the need to use aftermarket solutions with uncertain parameters. Choosing a used component also allows for optimizing repair costs while maintaining a high level of protection.

Ecological and economic aspect of the used part

By choosing a used seat airbag, you support the idea of responsible automotive recycling. Reusing functional components limits waste and reduces the demand for the production of new parts, which has a direct impact on reducing the carbon footprint. At the same time, it is a cost-effective solution, especially for complex post-accident repairs where the number of replaced parts is higher.

If you want to better understand how conscious selection of used components affects the environment and vehicle operating budget, it is worth reading the article Eco-driving: discover the benefits of used car parts, which discusses the advantages of this approach in more detail.

Expanding work on Mercedes seats

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 rails, adjustment mechanisms, or additional seat-related modules, check the available parts in the Other seat parts Mercedes category.