Audi A4 B8 Front Shock Absorber Left N/S Suspension Spring Strut 8T0413031AF

Audi A4 B8 Front Shock Absorber Left N/S Suspension Spring Strut is a component from the Shock absorbers and struts category, designed for the front left side of the suspension in Audi vehicles with a diesel engine. This solution allows for the restoration of proper chassis operation, improving stability, handling predictability, and driving comfort in daily use.

Specifications and technical data

• SKU: 8T0413031AF-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 8T0413031AF
• Substitutable numbers: 8T0413031AF, 8T0 413 031 AF, 8K0 412 391 F, 8K0412391F
• Location on the vehicle: Front, Left
• Fuel type: Diesel
• Category: Shock Absorbers

Purpose and function in the suspension system

The presented element combines the function of a spring and a front shock absorber, operating on the left side of the front axle. It is a key component responsible for damping vibrations, controlling suspension deflection, and maintaining proper wheel geometry in Audi cars with diesel engines. Thanks to its appropriately selected operating characteristics, it ensures stable vehicle handling both during city driving and on highways.

A properly selected shock absorber with a spring on the front axle contributes to:

• maintaining constant tire contact with the road surface,
• reducing body roll during braking and cornering,
• even distribution of loads on suspension components,
• more predictable vehicle behavior in emergency situations.

Benefits of use in the Audi A4 B8 2.0 TDI

Selecting an element dedicated to a specific diesel engine version allows for maintaining the correct suspension operating parameters, taking into account the weight of the power unit and the load distribution on the front of the vehicle. Using this component on the left side of the front axle helps restore the consistency of the entire system, especially when the previous element shows signs of wear, such as excessive body sway, increased braking distance, or uneven tire wear.

Replacing the spring and shock absorber with an element structurally compliant with the factory solution is also a way to maintain predictable vehicle behavior in driver assistance systems, such as electronic stability control or traction control systems, which rely on proper suspension operation.

Installation and operational characteristics

The element is intended for installation in the front left part of the suspension, in place of the factory spring and shock absorber assembly. The design from the Shock absorbers and struts group allows technicians to perform efficient replacement as part of standard maintenance procedures, without the need to modify other components. Due to the preservation of the original mounting geometry, it is possible to correctly set the wheel alignment and camber angles after the repair is completed.

In daily operation, a properly functioning spring and shock absorber assembly translates into stable handling, reduced noise from the suspension area, and more even load transfer to the body. This is particularly important in vehicles used intensively, where the chassis is exposed to frequent load changes and driving on uneven surfaces.

Condition, verification, and fitment

The offered element is in used condition, which means it comes from disassembly, and its performance parameters allow for further operation after proper installation. This type of solution is cost-effective while enabling compliance with the vehicle's factory specifications. Before purchasing, it is recommended to verify compatibility by the OEM part number and interchangeable numbers, which are listed in the technical specifications section.

To better understand the role of this component in the entire chassis system and the relationships between shock absorbers, control arms, and stabilizers, it is worth reading the guide material: Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers. The article helps to assess when to replace a single element and when to consider a wider scope of service work.

Expanding Audi suspension service

If you are planning a comprehensive repair or upgrade of the front suspension area in your Audi and need other elements from the same group, such as additional struts, complete shock assemblies, or related mounting hardware, check the available parts in the Audi shock absorbers and struts category.

A good practice when working with the suspension is to simultaneously check other front axle components – ball joints, bushings, and mounts – to avoid a situation where a new element works with other, already worn-out parts. Such an approach helps to reduce the number of service visits and maintain consistent vehicle handling parameters for a longer time.