BMW X5 E70 Air Supply Device Suspension Compressor Motor 6775479

BMW E70 Air Suspension Compressor 6775479 is a specialized component of the Automatic Level Control system, responsible for supplying compressed air to the pneumatic suspension. This component is designed for BMW models where stable operation of the self-leveling suspension and predictable vehicle behavior under load are crucial.

Specifications and technical data

• SKU: 6775479
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6775479
• Substitutable numbers: 37206859714, 6859714, 37226785506, 6785506, 37226775479, 6775479, 37206799419, 6799419, 37206789938, 6789938, EM, 17217553389, 7553389
• Category: Self-Levelling Suspension Parts

Function and Role of the Compressor in the Suspension System

The suspension air compressor is responsible for generating the appropriate pressure in the air springs or bellows, which allows for automatic maintenance of the set vehicle height. In practice, this translates to:

• stable ground clearance regardless of vehicle load,
• more predictable handling when fully loaded,
• maintaining correct wheel geometry under a wide range of driving conditions,
• efficient cooperation with safety systems such as ABS or ESP.

Thanks to a properly functioning compressor, the self-leveling system responds smoothly to changes in load, which improves driving comfort and safety.

Compatibility and Interchangeable Numbers

The offered compressor is part of the OEM BMW group, which means compliance with factory assembly and operation standards in vehicles of this brand. The component has a dedicated part number and a set of interchangeable numbers, which facilitates matching to a specific car configuration and verifying compliance with the manufacturer's catalog.

Before purchasing, it is advisable to compare the markings with the vehicle's data and the existing component to confirm full compatibility with the suspension system and pneumatic installation.

Condition, Purpose, and Service Application

The product is offered as a used part, making it an attractive solution for economical repairs when cost reduction while maintaining system functionality is a priority. This type of compressor is particularly suitable in situations where:

• the existing compressor has undergone wear and tear or damage,
• the automatic level control system reports errors related to air pressure,
• the component needs to be replaced as part of a comprehensive pneumatic suspension repair.

Due to the nature of the part, installation in a specialized service center equipped with appropriate diagnostic equipment for pneumatic systems is recommended.

Benefits of Using an Original BMW Compressor

Using a compressor from the original BMW parts group allows for maintaining the factory operating parameters of the suspension system. The main benefits include:

• factory fit for vehicle mounts and electrical installations,
• correct cooperation with the automatic level control modules,
• maintaining the suspension operating characteristics as intended by the manufacturer.

For the user, this means a reduced risk of installation problems and minimized need for modifications to the installation or control software.

BMW Automatic Level Control – Expansion and Service

If you are planning a comprehensive repair or upgrade of the pneumatic suspension area in your BMW and need other parts from the same group, such as air bellows, air lines, or control valves, check the available parts in the category BMW Automatic Level Control.

Technical Support for Selecting Used Components

When choosing a used suspension compressor, it is worth paying attention to how the component is tested, the terms of the start-up warranty, and compliance with catalog numbers. Additional tips for safely purchasing used components and avoiding common mistakes can be found in the article: Buying Used Car Parts • Common Mistakes When Choosing Parts for Tuning.

If you are simultaneously servicing the drivetrain or planning work on the transmission, you will find helpful information on diagnostics and purchasing used components in the guide: Gearbox: Manual, Automatic, or DSG – Common Faults and a Guide to Buying a Used Gearbox.