Audi A4 B7 Rear Wishbone Lower Control Arm Axle Suspension Left N/S 03437271

Audi A4 B7 Rear Wishbone Lower Control Arm Axle Suspension Left N/S is a component from the Control arms and ball joints category, designed for use on the rear axle on the left side. Engineered as an original Audi part, it ensures proper suspension geometry, stable vehicle handling, and predictable behavior during braking and acceleration. This used OEM component is a sensible choice for professional suspension repair when you require factory-fitment and consistent performance parameters.

Specifications and technical data

• SKU: 8E0505311AF
• Mark: Audi
• Condition: Used
• OEM Part Number: 8E0505311AF
• Substitutable numbers: 8E0505311AF, 8E0 505 311 AF, 03437271, 034 372 71
• Location on the vehicle: Rear, Left
• Category: Control Arms, Ball Joints & Assemblies

Purpose and function in the suspension

The rear lower control arm on the left side is responsible for maintaining the correct position of the wheel relative to the body and for transferring loads from the road surface to the chassis. In conjunction with other rear axle suspension components, it stabilizes the vehicle's path, limits unwanted changes in wheel alignment and camber, and influences the efficiency of power transmission. A properly selected control arm minimizes tire wear and improves the predictability of the car's reactions in corners.

Construction and fitment for Audi A4 B7

The control arm has been constructed specifically for the Audi A4 B7 generation platform, maintaining factory mounting points and operating geometry. This means that after correct installation, it restores the original suspension kinematics settings without the need for modifications or adaptations. Precise fitment to the body and steering knuckle facilitates installation and reduces the risk of improper loading of bushings and ball joints.

Benefits of using an original rear control arm

Using an original rear lower control arm in an Audi A4 B7 translates into a number of practical benefits:

• preservation of the vehicle's factory handling characteristics,
• proper cooperation with other suspension components,
• stable maintenance of wheel geometry over a long service life,
• reduction of vibrations and unwanted play in the rear axle.

As a result, the car handles predictably, and the suspension system copes better with road irregularities, which is important for both comfort and driving safety.

Vehicle placement and installation recommendations

The component is intended for installation in the rear of the vehicle on the left side, which is crucial when selecting parts for a single axle. In practice, when replacing a single control arm, it is often recommended to check the condition of other suspension components to avoid differences in stiffness and operating characteristics between the left and right sides. After installation, it is worth performing a professional wheel alignment to fully utilize the potential of the newly installed control arm.

Technical support and additional materials

To better understand the role of control arms in the entire suspension system and the relationships between shock absorbers, stabilizers, and guiding elements, it is worth consulting specialized materials. Practical tips on diagnostics and operation can be found in the article Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers, which discusses typical signs of wear and good service practices.

If you are planning a comprehensive repair or upgrade of the rear axle suspension area in your Audi and need other elements from the same group, such as additional control arms, ball joints, or guiding elements, check the available parts in the Audi control arms and ball joints category.