Audi A4 B9 Rear Spring Lower Upper Mount Support Rubber 4M0512297B

Audi A4 B9 Rear Spring Lower Upper Mount Support Rubber is a component from the Shock absorber and strut mounts group, designed for use in the rear suspension. It ensures stable seating of the coil spring, limits the transmission of vibrations to the vehicle body, and supports the correct geometry of the chassis, which translates into predictable vehicle handling.

Specifications and technical data

• SKU: 4M0512297B
• Mark: Audi
• Condition: Used
• OEM Part Number: 4M0512297B
• Substitutable numbers: 4M0512297B, 4M0 512 297 B
• Location on the vehicle: Rear
• Rim width: 8
• Category: Shock & Strut Mounts

Purpose and function in the suspension

The rear suspension spring mount rubber in the Audi A4 B9 acts as a flexible intermediate element between the spring and the vehicle body or control arm. Its tasks include:

• damping vibrations generated by the spring's operation on uneven surfaces,
• reducing noise and knocking sounds coming from the rear axle,
• stabilizing the spring's position in the mounting seat,
• protecting metal surfaces from direct contact and accelerated wear.

Thanks to the appropriately selected hardness of the rubber compound, this element supports ride comfort while maintaining the proper stiffness for the chassis.

Construction and technical fitment

The presented mount rubber is structurally prepared for operation in both the upper and lower spring seats of the rear axle. The shape and profile of the working surfaces are matched to the geometry of the spring and the mounting seats in the Audi body and suspension, which facilitates correct seating during service.

The element is adapted to work with wheels of a specific width, which is important for maintaining factory suspension performance parameters and proper load distribution on the rear axle. Using an original solution from this group allows for maintaining the consistency of driving characteristics with the vehicle manufacturer's specifications.

Service application and benefits of replacement

Replacing spring mount rubbers is recommended during work related to the rear suspension, especially when the following occur:

• knocking or squeaking sounds from the rear axle area,
• noticeable vibrations transmitted to the vehicle body,
• signs of wear, cracks, or deformation on existing rubber elements.

Using a properly selected spring mount rubber helps restore correct suspension operation, reduce noise, and increase vehicle handling stability, especially when the trunk is loaded or when driving with passengers in the back seat.

Product characteristics and condition

The offered mount rubber comes from a group of parts intended for Audi and is a used item, which allows for economical repairs while maintaining proper structural fitment. This type of component, when installed correctly, can effectively work with other rear suspension elements, such as springs and shock absorbers, ensuring consistent operation of the entire system.

Before installation, it is recommended to inspect the spring seats and other rear axle components to eliminate potential sources of play and unwanted noises in a single service stage. Replacing spring mount rubbers in pairs on both sides of the rear axle helps maintain suspension symmetry.

Expanding Audi rear suspension service

If you are planning a comprehensive repair or upgrade of the rear suspension area in your Audi and need other elements from the same group, such as shock absorber mounts, top mounts, or additional guide elements, check the available parts in the Audi shock absorber and strut mounts category.

For drivers interested in a broader approach to selecting used components – especially electronic ones – a guide describing the principles of selection and verification of such parts may be helpful; more information can be found in the article Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?.