Audi A4 B6 B7 Diesel Power Steering Fluid Tank Reservoir Bottle 8E0422373B

The Audi A4 B6 B7 Diesel Power Steering Reservoir is an original hydraulic system component designed for models with a Diesel engine. Engineered by Audi, it ensures proper fluid storage and circulation within the power steering system, contributing to stable pump operation and predictable vehicle handling.

Specifications and technical data

• SKU: 8E0422373B-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 8E0422373B
• Substitutable numbers: 8E0422373B, 8E0 422 373 B
• Fuel type: Diesel
• Category: Power Steering Pump Parts

Purpose and Function in the Power Steering System

The presented reservoir is part of the Power Steering Pump Parts group, responsible for maintaining the correct fluid level and initial air bleeding before it's supplied to the pump. In Audi A4 B6 and B7 generation vehicles with diesel engines, it plays a crucial role in stabilizing operating pressure and reducing cavitation in the system.

A properly selected reservoir helps reduce pump noise, minimizes the risk of power steering loss at low RPMs, and supports smooth steering gear operation under typical road conditions.

Benefits of Using an Original Audi Component

Choosing an original Audi power steering fluid reservoir translates to:

• a guaranteed fit for factory mounting points and hoses in Audi A4 B6/B7 Diesel models,
• maintaining the original operating characteristics of the power steering system,
• no need for modifications to the hydraulic system or mounting brackets,
• consistency with other components in the Power Steering Pump Parts group.

This ensures a straightforward installation, and the system can operate under conditions close to factory specifications after replacement, which is particularly important for vehicles used daily.

Condition, Installation, and Operation

The offered reservoir is a used part, which practically means a favorable compromise between cost and maintaining the original manufacturer's specifications. With proper installation, using the correct power steering fluid, and new clamps and seals, it can effectively restore the correct operation of the system in Audi A4 B6/B7 vehicles with diesel engines.

Replacing the reservoir is particularly recommended in situations where there are fluid leaks, visible cracks in the housing, fluid foaming in the tank, or problems with smooth power steering operation during maneuvering.

Part Selection and Technical Support

To correctly select the reservoir for a specific version of the Audi A4 B6 or B7 with a diesel engine, it is advisable to verify the part numbers and the power steering system configuration in the vehicle. If in doubt, it is helpful to compare the housing shape, port diameters, and mounting method with the currently installed component in the car.

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

More About Audi System Differences and OEM Part Advantages

For users interested in the characteristics of Audi powertrains and the structural differences between various Audi model series, a valuable addition to their knowledge will be the article Audi RS vs. Other Models – What Lies Under the Hood and Chassis?, which discusses, among other things, the specifics of the chassis and associated components.

If you are considering the choice between a used original part and an aftermarket replacement, you will find practical arguments and selection criteria in the guide 5 Reasons Why a Used OEM Part is a Better Choice Than an Aftermarket Replacement, which can help you make a decision when planning a power steering system repair.