BMW X5 Series E70 Pneumatic Spring Rear Left N/S Suspension 40-221595

BMW X5 E70 Rear Left Air Suspension Bellow is a component from the Shock Absorber and Strut Mounts category, designed for the rear left air suspension of the BMW X5 E70 generation. A used, original air bellows allows for the restoration of proper suspension system operation, body stability, and driving comfort without the need for replacements of unknown origin.

Specifications and technical data

• SKU: 6790080-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6790080
• Substitutable numbers: 40-221595, 37126790080, 6790080, 37126776995, 6776995, 37206781224, 6781224, 37236776250, 6776250, EM
• Location on the vehicle: Rear, Left
• Category: Other Steering & Suspension Parts

Purpose and Function in BMW X5 E70 Suspension

The rear suspension air bellows is responsible for maintaining the set body height and proper damping of loads acting on the rear axle. In the X5 E70 model, it plays a key role in the pneumatic system's operation, cooperating with shock absorbers, leveling sensors, and the suspension control unit. Mounted on the left side of the rear axle, it ensures even vehicle support and stable handling, especially with varying loads in the trunk and rear seat.

Construction and Technical Characteristics

The air bellows is a flexible load-bearing element that replaces the traditional coil spring. The internal construction of the bellows is designed to maintain airtightness under varying operating pressures while simultaneously transferring the vertical and lateral loads typical for a heavy SUV like the BMW X5 E70. The appropriately selected shape and mounting geometry allow for correct interaction with the shock absorber and other rear suspension components.

Thanks to the use of an original BMW solution, the bellows maintains proper operating parameters, such as deflection range, spring rate characteristics, and compatibility with the factory suspension control system. This translates to predictable vehicle behavior in corners, stability at higher speeds, and correct leveling function.

Benefits of Using an Original Air Bellows

Using a used, original air bellows in the BMW X5 E70 offers a number of practical benefits:

• maintaining the factory operating characteristics of the rear air suspension,
• secure fit to mounting points on the body and shock absorber,
• proper cooperation with leveling sensors and the suspension control unit,
• reduced risk of system errors and uneven body leveling,
• economical system repair while retaining an OEM-class component.

For the user, this means stable handling, correct vehicle height maintenance, and driving comfort close to the original design specifications. Choosing a component from the Shock Absorber and Strut Mounts category specifically for the BMW X5 E70 minimizes the risk of installation and operational problems.

Vehicle Placement and Installation Aspects

The presented air bellows is intended for installation on the rear left side of the vehicle. Correct placement is crucial for maintaining suspension geometry and even force distribution on the axle. When replacing, it is recommended to:

• thoroughly check the pneumatic system for leaks after installation,
• inspect the condition of the cooperating shock absorber and other mounting elements,
• perform suspension leveling adaptation or calibration if required by the service procedure.

Proper installation allows for full utilization of the air bellows' properties and restores correct rear suspension operation in the BMW X5 E70.

Part Selection by Numbers and Technical Support

The air bellows has a dedicated OEM part number and associated replacement numbers, which facilitates precise component identification and selection of the correct part for a specific BMW X5 E70 version. Verification by part number or vehicle data helps avoid errors and ensures compliance with the factory suspension specifications.

If you are interested in other BMW Shock Absorber and Strut Mounts, check the available products in the category: BMW Shock Absorber and Strut Mounts.

More information on selecting used OEM parts by numbers and vehicle data can be found in the guide article: how to select used OEM parts by numbers and vehicle data.

Summary

BMW X5 E70 Rear Left Air Suspension Bellow is an original pneumatic system component that allows for the restoration of proper rear suspension operation, body stability, and driving comfort. Due to its dedicated purpose for the rear left side of the vehicle and its belonging to the Shock Absorber and Strut Mounts category, it is a technically matched service solution for BMW X5 E70 owners seeking a reliable suspension component.