BMW 3 Series E46 Left N/S Head Airbag Roof Curtain 7075129

BMW 3 Series E46 Left N/S Head Airbag Roof Curtain is an original passive safety system component designed for installation on the driver's side. Designed by BMW, the curtain works with the factory airbag electronics, ensuring proper deployment and sequence within the 3 Series E46 body. This solution is dedicated to users who want to restore full SRS system functionality after a collision or replace a damaged module.

Specifications and technical data

• SKU: 7075129
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7075129
• Substitutable numbers: 72127075129, 7075129, 72127495447, 7495447, 72128266519, 8266519
• Location on the vehicle: Left
• Category: Other Interior Parts & Accessories

Purpose and function in the SRS system

The presented left head airbag curtain is an SRS system component responsible for protecting the head and upper torso of the driver and the front passenger on the left side. It is mounted along the roof edge, behind the headliner and pillar trim, so that it deploys along the side window upon activation.

Thanks to its factory design for the BMW 3 Series E46, the curtain works with side sensors and the airbag control unit, which allows for precise adjustment of inflation time to the body characteristics. The appropriate geometry and mounting method ensure proper coverage of the side zone, minimizing the risk of head contact with the window or structural elements.

Construction and fitment for BMW 3 Series E46

The curtain was developed as an OEM part for the 3 Series E46, which means it retains factory mounting points, cable lengths, and a shape adapted to the roofline. The placement on the left side guarantees compatibility with original brackets, clips, and installation routing in this specific area of the body.

Such fitment translates into:

• proper positioning of the curtain behind the roof and pillar upholstery,
• easier installation without the need for body modifications,
• preservation of the airbag deployment zone intended by the manufacturer.

Condition and service application

The item comes from a group of used original parts, which allows for economical repair of the safety system while maintaining factory specifications. This type of curtain is particularly useful for:

• post-accident repairs after side airbag deployment,
• replacing a damaged or incorrectly installed curtain,
• restoring the completeness of the SRS system in a BMW 3 Series E46.

Due to the nature of this safety component, installation by a specialized service center using appropriate diagnostic procedures and tools is recommended.

Selection by OEM number and compatibility

The curtain has a dedicated OEM part number and associated interchangeable numbers, which facilitates precise identification in BMW catalogs and service systems. This allows you to verify compatibility with a specific body version and model year of the 3 Series E46, minimizing the risk of selecting the wrong part.

If you want to check step-by-step how to properly match SRS system components by OEM number or reference number, a practical guide will be helpful: how to choose the right car part by VIN and OEM number. This is especially useful when working with used components, where the consistency of markings is crucial.

Expanding repairs within the roof zone

If you are planning a comprehensive repair or upgrade of the roof zone in your BMW and need other elements from the same group, such as additional curtains, mounts, or headliner covers, check the available parts in the Other BMW category.

For a comparison of the characteristics of drivetrain and braking systems in high-performance cars, you can read an article describing the differences between sports versions and standard models: Audi RS vs other models – what is hidden under the hood and chassis?. This will allow you to better understand how manufacturers design complete safety and driving dynamics systems.