Audi A4 B8 A5 8T Power Steering Pump Hydraulic Unit 2.0 Diesel 8K0145156S

Audi A4 B8 A5 8T Power Steering Pump Hydraulic Unit is an original steering system component designed for Audi models with a diesel engine. It ensures stable pressure in the power steering system, which translates into confident handling, precise steering response, and comfortable maneuvering in all conditions. Thanks to its factory design, the pump works seamlessly with other system components without the need for modifications, maintaining the parameters specified by the manufacturer.

Specifications and technical data

• SKU: 8K0145156S
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0145156S
• Substitutable numbers: 8K0145156S, 8K0 145 156 S
• Fuel type: Diesel
• Category: Power Steering Pumps

Purpose and compatibility with Audi models

The presented power steering pump has been designed for use in the hydraulic system of Audi A4 B8 and Audi A5 8T models with a 2.0 diesel engine. This means that the body geometry, mounting points, and hydraulic connections are adapted to the factory steering system of these vehicles. Using an original pump in a Diesel engine car allows for maintaining the proper operating pressure and performance characteristics intended for the heavier front axle and the specific load of the system in diesel versions.

Power steering pump operating characteristics

The hydraulic power steering pump is responsible for generating pressure in the system, which makes steering easier, especially at low speeds and during parking. This unit utilizes solutions typical for Audi hydraulic systems, ensuring:

• stable pressure across the entire engine RPM range,
• smooth steering response without jerking,
• adequate support during maneuvers in tight parking spaces,
• maintenance of predictable steering resistance at higher speeds.

As a result, the driver receives comfortable and predictable handling, and the steering system retains its factory performance characteristics, which is particularly important in premium mid-size cars such as the Audi A4 and A5.

Benefits of using an original power steering pump

Choosing an original power steering pump for an Audi offers a number of practical advantages compared to generic aftermarket replacements. The most important include:

• Factory fitment – compatibility with the hydraulic system and engine bay mounts, with no need to modify hoses or brackets.
• Consistent cooperation with other steering system components, such as the steering rack and high-pressure lines.
• Operating parameters adapted to the loads characteristic of the 2.0 diesel engine, which reduces the risk of fluid overheating and excessive component wear.
• Better predictability of vehicle behavior in emergency situations, thanks to the preservation of the original power steering characteristics.

Condition, verification, and practical application

The item comes from the Power steering pumps group and is intended for re-installation in a vehicle after verifying compatibility with the specific car configuration. As a used part, the pump provides an attractive cost-effective solution while maintaining the original design and operating parameters. Before installation, standard service procedures are recommended: checking system cleanliness, replacing the power steering fluid, and bleeding the system to ensure proper operation and minimize the risk of noise or pressure drops.

In case of doubts regarding selection for a specific engine or body version, it is worth using the OEM number or interchangeable numbers visible in the technical specification, which facilitates precise matching to a given Audi vehicle.

Technical support and additional materials

To better understand the relationships between the power steering pump, diesel engine load, and the operation of the entire system, a broader look at vehicle power supply and hydraulics may be helpful. In the context of selecting components by OEM number and proper maintenance of supply systems, it is worth reading the article: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which discusses, among other things, diagnostic principles and selecting parts by catalog numbers.

If you are planning a comprehensive repair or upgrade of the steering system area in your Audi and need other elements from the same group, such as hydraulic hoses, steering rack, or fluid reservoir, check the available parts in the Audi Power Steering Pumps category.

If you want to select more original used parts in one place – from engine components to small mounting accessories – the shopping guide describing the advantages of completing parts in the One-Stop-Shop model may be helpful: Comprehensive supply: from the engine to the smallest clip.