Mercedes W207 A207 C207 Steering Wheel Air Module Bag Black A2078604002

Visual condition of the part 

The product shows signs of use visible in the photos. 

Mercedes W207 A207 C207 Steering Wheel Air Module Bag Black is an original safety component designed for installation in the steering wheels of E-Class Coupé and Cabriolet W207, A207, and C207 series models. The black steering wheel airbag ensures a consistent look with the factory interior finish while maintaining compatibility with the original Mercedes safety system design. This is a solution for users who require a professional airbag replacement after a collision or when completing a steering wheel assembly.

Specifications and technical data

• SKU: A2078604002
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2078604002
• Substitutable numbers: A2078604002, A 207 860 40 02
• Color: Black
• Category: Other Interior Parts & Accessories

Purpose and function in the vehicle

The steering wheel airbag in Mercedes W207, A207, and C207 series is a key element of the passive safety system, working in conjunction with the SRS control module and collision sensors. It is responsible for rapid inflation during a frontal or partial frontal collision, reducing the risk of injury to the driver.

This component is designed specifically for installation in the factory steering wheel of these models, which allows for maintaining the correct position relative to the steering column, proper crush zone geometry, and compatibility with factory wiring harnesses and connectors.

Construction, color, and fitment

The black color of the airbag is consistent with the typical interior finish of Mercedes vehicles of this generation, ensuring that a uniform cockpit aesthetic is maintained after installation. The outer airbag panel is contoured for the factory steering wheel, which facilitates installation and ensures proper fitment with the steering wheel spokes.

The original steering wheel airbag construction is prepared for integration with factory mounts, which allows for:

• stable seating in the steering wheel body,
• proper routing of the electrical harness,
• correct operation of the panel opening mechanism upon activation.

Practical application and installation aspects

When replacing the airbag in a Mercedes W207/A207/C207 series, it is crucial to maintain compatibility with the factory SRS system. Using an original steering wheel airbag helps reduce the risk of communication errors with the control module and avoids issues with the airbag warning light on the instrument cluster.

During installation, it is recommended to:

• disconnect the vehicle's power supply before starting work,
• use appropriate tools for steering wheel removal and releasing the airbag clips,
• check the condition of the clock spring (steering column ribbon cable) and SRS system connectors.

Due to the nature of this safety component, installation should be performed by a person with experience in working with airbag systems.

Benefits of using an original steering wheel airbag

Using an original steering wheel airbag in a Mercedes W207/A207/C207 series allows for the preservation of factory safety parameters and interior aesthetics. The consistent look of the black airbag with the dashboard and steering wheel influences the perception of the entire cockpit, which is important both for daily use and for the potential resale of the vehicle.

Additionally, compatibility with the factory SRS system limits the risk of diagnostic errors and facilitates potential calibration or error clearing after installation at a professional service center.

Expanding the safety system in your Mercedes

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

For drivers interested in comparing technical solutions used in different brands and sports versions, including engines, brakes, and chassis, our blog article may be helpful: Audi RS vs other models – what is hidden under the hood and chassis?, which shows how manufacturers integrate safety systems with other vehicle components.