BMW E65 E66 Rear Left N/S Door Air Module 7077221

BMW E65 E66 Rear Left N/S Door Air Module is an original safety component designed for installation in the rear left door of BMW 7 Series E65/E66 generation limousines. This product from the Door upholstery category works with the factory SRS system, ensuring proper side protection for the passenger. It is a solution for users who want to restore the full functionality of the airbag system after a collision or door replacement.

Specifications and technical data

• SKU: 7077221
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7077221
• Substitutable numbers: 72127077221, 7077221, 72127226161, 7226161
• Location on the vehicle: Rear, Left
• Category: Door Panels

Purpose and function in the vehicle

The side airbag mounted in the rear left door is responsible for protecting the passenger during side impacts, working in conjunction with crash sensors and the SRS system controller. The component is designed specifically for the BMW E65/E66 door structure, which guarantees correct positioning relative to the upholstery, reinforcements, and factory mounting points.

Thanks to its dedicated placement in the rear – left side of the vehicle zone, the airbag deploys in a controlled manner, minimizing the risk of chest and pelvic injuries for the rear passenger. Using the correct component is crucial for maintaining compliance with factory safety parameters.

Compatibility with BMW E65/E66

The offered airbag has been developed with the BMW 7 Series E65/E66 body architecture in mind, taking into account door geometry, wiring harness routing, and integration with the upholstery. This makes it possible to maintain the original interior finish line and ensure the correct operation of the safety system without the need for installation modifications.

Selecting the correct component for the rear left side of the vehicle helps avoid assembly problems, diagnostic errors, and incorrect airbag deployment during activation. This is particularly important for vehicles equipped with the extensive comfort and safety systems typical of the 7 Series.

Installation characteristics

The airbag is designed to be installed inside the door structure, behind the upholstery, in the factory-designated mounting space. Proper fitment to the original brackets and guides facilitates service work and reduces the risk of incorrect positioning of the element relative to the door panel.

During installation, it is recommended to:

• follow BMW service procedures regarding SRS systems,
• disconnect the vehicle's power supply before starting work,
• verify the electrical installation and connectors for damage,
• check the correct installation of the door upholstery after completing the installation.

This approach allows for maintaining the safe operation of the airbag system and avoiding errors in the vehicle's diagnostic system.

Application in the safety system

The door side airbag works with other passive safety system components, such as curtain airbags, seat belt tensioners, or crash sensors. Proper integration of all components is essential for the vehicle to meet the passenger protection standards set by the manufacturer.

Replacing a damaged airbag with the correct component intended for the rear left side of the BMW E65/E66 allows for restoring the full functionality of the system, which is important both for user safety and for the correctness of technical inspections and any readings from diagnostic systems.

BMW door upholstery – expansion and completion

If you are planning a comprehensive repair or upgrade of the door area in your BMW and need other elements from the same group, such as door panels, reinforcements, or additional covers, check the available parts in the BMW door upholstery category.

Technical knowledge and selection of used components

When working with safety systems, such as airbags or control elements, it is worth following proven service procedures and workshop experience. In the case of other components, for example from the drivetrain area, expert materials can be helpful – a good supplement to knowledge is the article Used gearbox – when is it worth it and what you need to remember, which discusses the practical aspects of selecting and operating used components.