BMW X5 E70 Pneumatic Spring Rear Left N/S Suspension 6790079

BMW X5 E70 Pneumatic Spring Rear Left N/S Suspension is a suspension system component designed for BMW vehicles equipped with the Automatic Level Control system. It is responsible for maintaining the correct height of the rear axle on the left side, body stabilization, and ride comfort under varying vehicle loads.

Specifications and technical data

• SKU: 6790079
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6790079
• Substitutable numbers: 37126790079, 6790079, 37126774041, 6774041
• Location on the vehicle: Rear, Left
• Category: Self-Levelling Suspension Parts

Application and function in the suspension system

The pneumatic spring bellows is mounted on the rear axle on the left side and works in conjunction with the automatic body leveling system. Its task is to compensate for the load in the trunk and the rear part of the vehicle so that the suspension height remains within the optimal range regardless of the number of passengers or the weight of the cargo.

In practice, this means:

• maintaining stable suspension geometry under full load,
• reducing body roll while driving,
• more predictable vehicle behavior in corners and during braking,
• increased ride comfort due to operation on compressed air instead of a classic spring.

Benefits of a properly functioning pneumatic spring

A functional pneumatic spring in a BMW X5 E70 translates into significantly better handling characteristics. The Automatic Level Control system can then react precisely to load changes, maintaining the set body level and working with other suspension components and safety systems.

Replacing a worn pneumatic spring with a functional unit allows you to:

• eliminate the rear of the vehicle sagging after parking,
• reduce uneven tire wear on the rear axle,
• limit excessive suspension bottoming on bumps,
• restore the correct operation of the leveling system and associated dashboard messages.

Mounting characteristics and fitment

The presented item is intended for installation on the rear axle on the left side, in accordance with the vehicle placement marking. Thanks to a design consistent with factory solutions, proper fitment to the mounting seats and pneumatic lines is maintained, which facilitates installation and reduces the risk of leaks.

The product belongs to a group of parts compatible with the factory automatic leveling system, so when selecting, it is important to pay attention to compatibility with the specific suspension version used in a given BMW X5 E70 unit.

Product condition and operational aspects

The offered pneumatic spring is in Used condition, which means it has been removed from a vehicle and was previously in operation. This type of part allows for an economical repair of the suspension system while maintaining the original design and operating parameters characteristic of BMW solutions.

Before installation, it is recommended to verify the tightness of the pneumatic system, the condition of the lines, and the correct operation of the compressor so that the newly installed component can work in stable pressure conditions and ensure long-term, trouble-free operation.

BMW Automatic Level Control – expansion and selection of components

If you are planning a comprehensive repair or upgrade of the rear suspension area in your BMW and need other components from the same group, such as additional bellows, components working with the pneumatic system, or elements responsible for maintaining body height, check the available parts in the BMW Automatic Level Control category.

Technical support and additional knowledge

When working with drivetrain and suspension components, it is worth using reliable sources of knowledge, especially when the intervention also involves the gearbox or its accessories. Practical information on the selection and operation of used components can be found in the article: Gearbox: manual, automatic or DSG – typical faults and a guide to buying a used gearbox.

For a better understanding of suspension operation and the impact of its components on safety and ride comfort, the following guide to suspension components may also be helpful: Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers.