Mercedes W220 Door Paneling Side Air Module SRS Grey Left N/S A1708170020

Visual condition of the part

The product shows signs of use visible in the photos. Mercedes W220 Door Paneling Side Air Module SRS Grey Left N/S is an original passive safety system component designed for installation on the left side of the vehicle interior. Thanks to its factory-fit design for the W220 S-Class generation, it ensures seamless integration with the SRS system and proper positioning relative to the seat and door panel. It is a practical solution for users looking to restore full safety functionality after a collision or upholstery component replacement.

Specifications and technical data

• SKU: A1708170020-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1708170020
• Substitutable numbers: A1708170020, A 170 817 00 20
• Location on the vehicle: Left
• Part type: Trim Strip
• Category: Trim

Purpose and function in the SRS system

The side airbag in the Mercedes W220 is responsible for protecting the driver in the event of side impacts, working in conjunction with crash sensors and the SRS control unit. The positioning on the left side of the vehicle allows for precise alignment with the geometry of the seat and door panels, which translates into predictable performance in emergency situations. This component is particularly important for post-accident repairs, replacing damaged airbags, or restoring the completeness of the safety system after interior work. The factory design promotes compliance with the vehicle manufacturer's engineering parameters.

Construction and fitment for the Mercedes W220

The airbag has been designed specifically for the interior architecture of the W220 S-Class, which means it features the correct shape, mounting points, and compatibility with the SRS electrical system. The grey color facilitates integration with typical upholstery configurations in this model, reducing the need for additional visual modifications. The positioning on the left side of the vehicle allows for clear identification during installation and minimizes the risk of confusion with components intended for the right side. As a result, the service process is more efficient, and the user gains greater confidence in the correct selection of parts.

Benefits of using an original side airbag

Using an original side airbag in a Mercedes W220 offers a number of practical benefits:

• maintenance of compatibility with the factory SRS system and control unit logic,
• proper fitment to the seat and door panel structure,
• color consistency with the grey interior finish,
• reduction of the need for electrical system modifications. Thanks to this, the side zone repair process can proceed more efficiently, and the risk of communication issues with the SRS control unit is reduced.

Condition, origin, and practical application

The offered side airbag comes from dismantling and is a used component, which represents a reasonable compromise between repair costs and maintaining the vehicle's original specifications. This type of solution is often chosen for comprehensive post-accident repairs when it is necessary to replace several safety system components at once. Before installation, it is recommended that the work be performed by a qualified service center, following procedures for SRS systems, including disconnecting the power supply and verifying errors in the control unit memory. Proper installation is crucial for the subsequent operation of the airbag in an emergency situation. If you are planning a comprehensive repair or upgrade of your Mercedes interior and need other elements from the same group, such as linings, trim strips, or decorative panels, check the available parts in the Mercedes linings, trim strips, and decorations category.

Safe selection of used components

When choosing used components for safety and power systems, it is worth following proven practices and technical knowledge. Additional tips on the safe selection of parts from dismantling can be found in the blog article Fuel dosing problems: what to look for when buying a used injection pump and fuel rails?, which discusses key aspects of assessing the condition of components before installation.