Spring Set BMW G20 Rear Suspension Right Left N/O/S BH AI:02 Coil Spring

Spring Set BMW G20 Rear Suspension Right Left N/O/S BH AI:02 Coil Spring is an original set of suspension components designed for the rear axle, covering both the left and right sides. The set ensures consistent, predictable vehicle behavior, which is particularly important when replacing worn suspension components. Thanks to its factory origin from the BMW brand, the proper suspension performance characteristics and compatibility with the body structure are maintained.

Specifications and technical data

• SKU: 688997-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 688997
• Substitutable numbers: 688997, 33526879361, 6879361
• Location on the vehicle: Rear, Right, Left
• Category: Leaf & Coil Springs

Purpose and function in the suspension system

The rear suspension spring set is responsible for maintaining the correct vehicle ride height and stable load distribution on the rear axle. These components work in conjunction with shock absorbers, influencing ride comfort, bump absorption, and vehicle behavior during braking and acceleration. Using a set for both the left and right sides allows for maintaining uniform suspension performance, which reduces the risk of leaning and uneven wear of other components.

Rear axle set – left and right side

The presented set includes springs designed for the rear axle of the vehicle, dedicated to both the left and right sides. This solution facilitates service, as both suspension elements can be replaced in a single operation, restoring consistent suspension performance parameters. The vehicle placement is precisely defined, which minimizes the risk of installation errors and speeds up the repair process.

Product characteristics and advantages of use

As an element from the Leaf and coil springs group, the set has been designed to operate in demanding conditions typical for the rear suspension of passenger cars. The used OEM component retains factory geometry and performance parameters, which is particularly important in vehicles where predictable handling and stability are essential. Replacing worn springs with an original set helps to reduce phenomena such as rear-end "sagging," excessive bouncing, or incorrect operating angles of other suspension components. The used condition means that the item has been previously operated, yet it can still fulfill its function in the vehicle, representing a reasonable compromise between repair costs and maintaining the original design specifications. This solution is often chosen for vehicle service where the priority is compliance with factory suspension characteristics while optimizing the repair budget.

Professional installation and practical application

When replacing rear suspension springs, it is recommended to install the set on both sides of the axle to avoid differences in deflection and performance characteristics. The set dedicated to a specific BMW model facilitates workshop work – there is no need to match replacements with uncertain parameters, and the installation process proceeds according to the vehicle manufacturer's specifications. Properly selected springs contribute to:

• maintaining the correct rear axle geometry,
• vehicle stability when the trunk and rear seats are loaded,
• uniform cooperation with shock absorbers,
• predictable vehicle behavior in corners.

Related components and further knowledge

If you are planning a comprehensive repair or upgrade of the suspension area in your BMW and need other elements from the same group, such as additional springs, leaf springs, or related suspension components, check the available parts in the BMW Leaf and coil springs category. For users who want to better understand the relationship between suspension condition and ride comfort, as well as the impact of air conditioning and heating systems on overall vehicle comfort, the guide article Air conditioning and heating – part selection and maintenance for year-round comfort, which describes the selection of used OEM components and practical service procedures, may be helpful.