Mercedes CLA C117 Head Air Module Roof Curtain Right O/S A1178601202

The Mercedes CLA C117 Curtain Airbag Right is an original safety component designed for installation on the right side of the body. The curtain works with the factory SRS system, providing effective protection for passengers' heads and upper torsos during side impacts. This solution helps maintain the structural integrity of the interior and the proper functioning of passive systems in your Mercedes.

Specifications and technical data

• SKU: A1178601202
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1178601202
• Substitutable numbers: A1178601202, A 117 860 12 02
• Location on the vehicle: Right
• Category: Headliners & Parts

Purpose and Function of the Curtain Airbag

The curtain airbag, installed in the headliner area on the right side, is a key element of the airbag system. In the event of a side collision, it creates a barrier between the passenger and the window and pillars, reducing the risk of head and neck injuries. Using an original solution dedicated to the CLA C117 model ensures the correct deployment geometry of the airbag and appropriate response times from the control unit.

Compatibility with Body and Headliner

The curtain is designed for integration with the factory Headliner and Parts in the Mercedes CLA C117, ensuring that mountings, wiring harnesses, and anchor points are compatible with the body structure. Proper fit to the shape of the roof and pillars ensures:

• correct positioning along the roof edge on the passenger side,
• cooperation with factory headliner covers and trims,
• stable mounting at points designated by the manufacturer.

This allows for an organized installation process, and once the headliner trim is closed, the component remains invisible, preserving the interior's aesthetics.

Mounting Parameters and SRS System Integration

The curtain is intended for installation on the right side of the vehicle, which is important for both deployment geometry and correct assignment to the airbag control unit. Proper placement ensures:

• compliance with the factory airbag layout,
• correct assignment to the SRS control unit circuit,
• proper cooperation with side-impact sensors.

Using an original solution dedicated to a specific body version reduces the risk of installation errors and problems with safety system diagnostics.

Product Characteristics and Advantages of Using a Used Part

The offered curtain is a used component, allowing for an economical repair of the safety system while maintaining the original design. Compared to non-factory aftermarket alternatives, using a component from a Mercedes promotes:

• consistency with other elements of the airbag system,
• easier diagnostics using factory service tools,
• adherence to the vehicle manufacturer's design specifications.

This solution is suitable for both post-accident repairs and for restoring full SRS system functionality after previous interventions.

Support with Selection and Additional Technical Information

Before installation, it is advisable to verify the curtain's compatibility with the specific equipment version and model year of the CLA C117 body, using the OEM part number and available interchangeable numbers in the technical specifications. If in doubt, comparing the shape, length, and mounting points with the removed part from the vehicle will be helpful.

If you are planning a comprehensive repair or upgrade of the roof and headliner area in your Mercedes and need other parts from the same group, such as covers, brackets, or mounting strips, check the available parts in the Mercedes Headliner and Parts category.

For service work performed concurrently with the maintenance of comfort systems, such as interior ventilation or heating, practical tips on selecting and operating components may be helpful. More information can be found in the article Air Conditioning and Heating – Part Selection and Maintenance for Year-Round Comfort, which discusses working with used OEM components and service procedures.