BMW X5 E70 Rear Air Strut Pneumatic Spring Suspension Sack Set X2 6790079

The BMW X5 E70 Rear Air Spring Bellow is a specialized component of the suspension system, designed for the rear axle on both the left and right sides. A set of two pieces ensures consistent operation of both suspension sides, which translates to stable vehicle handling, uniform body height maintenance, and predictable vehicle behavior under various load conditions. This solution is dedicated to drivers expecting precise pneumatic suspension operation in the BMW X5 E70.

Specifications and technical data

• SKU: 6790079-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6790079
• Substitutable numbers: 37126790079, 6790079, 37126774041, 6774041
• Location on the vehicle: Rear, Right, Left
• Part type: Strut Set
• Category: Shocks, Struts & Assemblies

Purpose and Function in the Suspension System

The presented set of rear air spring bellows is a component from the Shock Absorbers and Struts group, responsible for maintaining the correct height of the rear of the body and cooperating with shock absorbers in the pneumatic suspension system. These components operate on both sides of the rear axle, allowing the vehicle to maintain stable geometry, even with variable trunk load or trailer towing.

A properly selected air spring bellows:

• ensures even support of the rear axle,
• limits body roll during acceleration, braking, and cornering,
• supports driving comfort through cooperation with shock absorbers and the suspension control system.

Compatibility and Installation Configuration

The set is designed specifically for the BMW X5 E70, meaning it is adapted to the factory pneumatic suspension system of this model. The components are intended for installation on the rear axle on the left and right sides, allowing for simultaneous replacement of both bellows and maintaining suspension symmetry.

This service approach is particularly recommended when:

• one of the bellows shows a leak or pressure loss,
• the vehicle has visible height differences on the left and right sides,
• the suspension system generates error messages related to rear axle leveling.

Performance Characteristics and Benefits of the Set

As a component of the pneumatic system, the air spring plays a crucial role in maintaining the comfort and stability of the BMW X5 E70. Using a dedicated set of two pieces allows for:

• consistent suspension behavior on both sides of the axle,
• reduction of the risk of uneven wear of cooperating components,
• more predictable vehicle response to load changes and surface irregularities.

The product comes from the BMW parts group, which helps maintain the factory operating parameters of the suspension system and facilitates integration with the vehicle's existing installation.

Component Condition and Service Application

The offered set of air spring bellows is a used part, making it an attractive cost alternative to new components, while maintaining original construction and purpose. This type of solution is often chosen for:

• routine repairs on vehicles with higher mileage,
• restoring suspension functionality after a failure of one of the pneumatic components,
• suspension system servicing when matching the factory configuration is a priority.

Technical Support and Additional Materials

To better understand the role of air spring bellows in the entire suspension system and their relationship with shock absorbers, control arms, and stabilizers, it is worth consulting the technical guide: Suspension System – A Comprehensive Guide to Shock Absorbers, Control Arms, and Stabilizers. The article helps assess when replacing a single component is sufficient and when a broader scope of service work should be planned.

If you are planning a comprehensive repair or upgrade of the rear suspension area on your BMW and need other parts from the same group, such as shock absorbers, struts, or mounts, check the available parts in the BMW Shock Absorbers and Struts category.