Seat Leon Mk3 Head Air Module Headliner Roof Curtain Right O/S 3-Door 5F3880742

Visual condition of the part

The product shows signs of use visible in the photos.

Seat Leon Mk3 Head Air Module Headliner Roof Curtain Right O/S 3-Door is an original passive safety system component designed for installation in the headliner on the driver or passenger side, depending on the steering wheel position. This used component ensures a factory fit, and thanks to its design compliant with the manufacturer's standards, it represents a reliable service solution for post-accident repairs or replacing a damaged curtain.

Specifications and technical data

• SKU: 5F3880742
• Mark: Seat
• Condition: Used
• OEM Part Number: 5F3880742
• Substitutable numbers: 5F3880742, 5F3 880 742
• Location on the vehicle: Right
• Category: Other Interior Parts & Accessories

Purpose and function of the roof curtain module

The presented item is responsible for the operation of the right-side air curtain integrated with the headliner in a third-generation three-door Seat Leon. The module works with collision sensors and the central airbag control unit, monitoring the activation of the curtain in the event of a side impact or rollover. As such, it is a vital link in the system designed to reduce the risk of head and upper torso injuries for passengers sitting on the right side of the vehicle.

The original design ensures compatibility with factory wiring, headliner mounts, and SRS system logic. Dedicated right-side placement minimizes the risk of installation errors and facilitates service work compared to universal replacements.

Construction, installation, and vehicle integration

The roof curtain module is adapted for installation in the original mounting points in the headliner above the right side of the body. Its housing and electrical connectors are designed to work with the factory wiring harness and the roof structure of the three-door version. This allows the technician to carry out the replacement in an orderly manner, adhering to the manufacturer's procedures.

During installation, it is crucial to:

• correctly route the cables along the headliner,
• use the proper mounting points and clips,
• maintain the correct sequence of disassembly and assembly of interior trim elements,
• perform SRS system diagnostics after completing the work.

This approach allows for maintaining consistency in the operation of the safety system and reducing the risk of errors associated with incorrect connection.

Service application and benefits of choosing OEM parts

The right-side roof curtain module is particularly useful for post-accident repairs where the curtain has deployed or the installation within the headliner area has been damaged. Choosing an original Seat component means:

• maintaining factory operating parameters of the airbag system,
• reliable fit to the roof structure and upholstery,
• easier diagnostics using factory service software,
• consistency with other elements of the vehicle's safety system.

For workshops specializing in the Seat brand and for users who care about the technical correctness of repairs, using an original module is a more predictable solution than installing unverified replacements. The OEM component allows for maintaining the vehicle configuration in accordance with the manufacturer's specifications.

Part selection by numbers and vehicle compatibility

To ensure that the roof curtain module will be suitable for a specific equipment version and model year of the Seat Leon Mk3, it is worth verifying compatibility by the OEM part number and any interchangeable numbers. This selection method minimizes the risk of purchasing an item with a different electrical configuration or different type of mounts. Additionally, comparing the shape of the housing and connectors with the part removed from the vehicle can be helpful.

If you want to deepen your knowledge about the structural differences between sports and standard versions of VAG group models, including changes in drive and brake systems, the following article will be useful: Audi RS vs other models – what is hidden under the hood and chassis?. It will allow you to better understand the design philosophy of components in the group of manufacturers associated with the Seat brand.

Support with selection and other items in this group

If you are planning a comprehensive repair or upgrade of the passive safety zone in your Seat and need other elements from the same group, such as additional control modules, collision sensors, or SRS wiring harnesses, check the available parts in the Other Seat category.

When purchasing used safety system elements, correct identification by the manufacturer's numbers and markings is particularly important. To reduce the risk of mistakes when selecting components, it is worth using the practical tips described in the guide: Online parts shopping without risk – 5 proven ways to verify component compatibility. This will make it easier for you to verify whether the offered roof curtain module will work properly with your vehicle's electronics.