Audi A4 S4 B8 A5 S5 8T Power Steering Oil Cooler Radiator 8K0422885D

Audi A4 S4 B8 A5 S5 8T Power Steering Oil Cooler Radiator is an original Audi steering system component responsible for stable heat dissipation from the power steering fluid. Thanks to its precise design, it ensures efficient steering rack operation, reduction of the working medium temperature, and higher resistance of the entire system to loads during dynamic driving.

Specifications and technical data

• SKU: 8K0422885D
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0422885D
• Substitutable numbers: 8K0422885D, 8K0 422 885 D
• Part type: Hose
• Category: Power Steering Hoses

Function of the power steering oil cooler in the Audi steering system

The power steering oil cooler in Audi A4 / S4 B8 and A5 / S5 8T models operates in a circuit with the pump and steering gear, stabilizing the hydraulic oil temperature. Maintaining the correct temperature range limits viscosity drop, reduces the risk of cavitation, and protects seals and hoses from accelerated wear. In practice, this translates into more precise vehicle handling, a lower risk of noise from the power steering system, and a longer service life for other components.

Construction and integration with the Power Steering Hoses system

The offered cooler is a component from the Power Steering Hoses group, working in conjunction with high and low-pressure lines. Its design enables effective heat exchange while maintaining proper oil flow without generating excessive pressure drops. The arrangement of the connectors and the shape of the housing are matched to the factory routing of the lines in the engine compartment, which facilitates installation and allows for maintaining the original hydraulic installation layout.

Benefits of using an original Audi power steering oil cooler

Using an original Audi component instead of a worn or leaking cooler allows for restoring the proper operating conditions of the power steering system. Key advantages include:

• maintaining stable oil temperature across a wide range of loads,
• reducing the risk of overheating the pump and steering gear,
• preserving the factory characteristics of steering assist force,
• better protection of seals and hoses against thermal degradation.

For the user, this means more predictable vehicle behavior in corners, a lower risk of leaks, and a reduction in future repair costs related to the steering system.

Condition of the component and application in steering system service

The presented power steering oil cooler is a dismantled part, which allows combining original manufacturing quality with a cost-effective repair. Replacing the cooler is particularly recommended in case of corrosion, mechanical damage to the fins, leaks, or after the failure of another power steering component that could have led to oil overheating. It is worth combining the installation with an inspection of the hoses, the condition of the steering rack, and the quality of the hydraulic oil itself.

Technical support and additional materials

When diagnosing problems such as steering play, noise, or leaks from the gear, a guide describing the selection and installation of dismantled parts may be helpful. To better plan the steering system repair, it is worth reading the article: Steering play and leaks – is a used steering rack a good solution.

If you are planning a comprehensive repair or upgrade of the steering system area in your Audi and need other components from the same group, such as return lines, pressure hoses, or additional sections of oil lines, check the available parts in the Audi Power Steering Hoses category.