Audi S4 B9 S5 F5 Suspension Stabilizer Rear Axle Anti Roll Bar 8W0511305AL

Visual condition of the part

The product shows signs of use visible in the photos.

The Audi S4 B9 S5 F5 Suspension Stabilizer Rear Axle Anti Roll Bar is an original suspension system component, designed by Audi for precise handling and predictable vehicle behavior. As part of the Stabilizers, calipers and bushings group, it is responsible for reducing body roll, improving traction, and ensuring stability during dynamic driving.

Specifications and technical data

• SKU: 8W0511305AL
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W0511305AL
• Substitutable numbers: 8W0511305AL, 8W0 511 305 AL
• Location on the vehicle: Rear
• Category: Sway Bars, Links & Bushings

Purpose and function in the suspension

The presented stabilizer operates on the rear axle, connecting suspension components on both sides of the vehicle. This reduces the difference in wheel deflection when cornering, which translates into:

• more neutral body behavior in curves,
• better tire contact with the road surface,
• increased stability at higher speeds,
• more predictable vehicle response to steering inputs.

In the S4 B9 and S5 F5 models, the rear axle stabilizer is a crucial element of the suspension setup, supporting the sporty character of the chassis and ensuring consistent operation of shock absorbers, springs, and other components.

Benefits of using an original Audi stabilizer

Using an original stabilizer from the same design group as the factory component ensures the maintenance of proper suspension geometry and appropriate lateral stiffness. In practice, this means:

• reliable rear axle handling without unwanted body roll,
• no need for mounting modifications or interference with the suspension structure,
• compatibility with factory bushings, links, and calipers from the same group,
• consistent operation with safety systems such as traction control or electronic stability control.

For the user, this means maintaining the handling characteristics intended by the manufacturer, without the risk of compromising comfort or experiencing unpredictable vehicle reactions.

Component condition and installation aspects

The stabilizer is a dismantled part and is offered as a used suspension system component. This type of part, when properly maintained, retains its properties for a long time, which is why in many cases it is a technically sound choice for repairs or restoring the factory suspension configuration.

The location on the vehicle is specified as rear, which facilitates clear identification during selection and service planning. The stabilizer is installed at the standard mounting points provided by the manufacturer, allowing for efficient replacement in a workshop environment.

Part selection and vehicle compatibility

To ensure full compatibility with a specific version of the Audi S4 B9 or S5 F5, it is worth verifying the markings in the vehicle's technical specification and comparing them with the data in the specification table before purchasing. This ensures that the stabilizer will work correctly with other suspension elements, such as bushings, links, or calipers from the same group.

If you are planning a comprehensive repair or upgrade of the suspension area in your Audi and need other elements from the same group, such as stabilizers, calipers, or bushings, check the available parts in the Audi stabilizers, calipers and bushings category.

Safety and additional technical materials

Replacing components responsible for vehicle handling should go hand in hand with maintaining the braking system. When planning service work, it is worth familiarizing yourself with practical tips on selecting used brake components – you can find a detailed checklist in the article Second-hand braking system: how to safely choose discs, calipers, and ABS?. This will make it easier to plan a consistent suspension and brake service while maintaining an appropriate level of safety.

Summary

The rear axle stabilizer designed for the Audi S4 B9 and S5 F5 is a functional, original component from the Stabilizers, calipers and bushings group, which restores the proper lateral stiffness of the suspension and handling stability. Choosing a used component of this type allows you to maintain the factory chassis setup while preserving high handling precision and predictable vehicle behavior in both daily and dynamic use.