BMW E90 Steering Hose M57N2 325d 330d Rack Expansion Pipe Line 6764779

BMW E90 Steering Hose M57N2 325d 330d Rack Expansion Pipe Line is a component designed to work with the steering rack and power steering system, responsible for the stable flow of fluid within the steering gear. Thanks to a design consistent with BMW factory solutions and its classification within the Power steering pumps group, this part allows for maintaining the correct operating parameters of the steering system in vehicles with the M57N2 engine.

Specifications and technical data

• SKU: rhd-6764779
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6764779
• Substitutable numbers: 32416764779, 6764779, BG
• Category: Power Steering Pumps

Application in the BMW E90 steering system

The hose is intended for BMW 3 Series E90 models with the M57N2 unit in 325d and 330d versions, where it works in conjunction with the steering rack and power steering pump. Its task is to guide the operating medium in the area of the steering rack, which influences steering smoothness, maneuvering precision, and the overall refinement of the system.

The element has been designed as part of the original power steering architecture, therefore it ensures proper geometric fit, correct routing relative to the body and other hoses, and compatibility with factory mounts.

Technical and functional characteristics

As a component from the Power steering pumps group, the expansion hose contributes to the fluid circuit within the steering gear. A properly selected internal diameter and shape of the sections allow for maintaining the correct operating pressure and reducing the risk of cavitation or local flow drops.

This solution is particularly important in cars with the M57N2 diesel engine, where the vehicle's weight and torque generate higher loads on the steering system. A correctly selected hose helps maintain stable operation of the power steering pump, and thus the comfort and predictability of vehicle handling.

Condition, origin, and OEM selection

The offered hose is a used part, originating from an original BMW system, which promotes maintaining structural consistency with other vehicle components. This type of component is frequently chosen by workshops and individual users who expect factory fitment without the need for installation modifications.

Selecting the hose for a specific vehicle should be based on the OEM number and interchangeable numbers – this allows for verifying compatibility with the specific body version and steering system. In case of doubt, it is recommended to compare data with service documentation or the BMW parts catalog.

Benefits of using an original expansion hose

• Factory fitment for the BMW E90 steering system with the M57N2 engine.
• Compatibility with the power steering pump and rack according to the manufacturer's specifications.
• Reduced risk of leaks and pressure issues in the fluid circuit.
• Possibility of economical repair thanks to the use of a used part with original geometry.

If you are planning a comprehensive repair or upgrade of the steering system area in your BMW and need other elements from the same group, such as pressure hoses, return lines, or pump supply components, check the available parts in the BMW Power steering pumps category.

Technical support and parts selection

When working with hydraulic systems, such as power steering, it is crucial to correctly identify the vehicle configuration and select components by catalog numbers. Elements in other vehicle systems, for example, the fuel system, are selected in a similar way – a detailed discussion of this procedure, along with examples of diagnostics and regeneration, can be found in the article "Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration".

If you want to deepen your knowledge on the safe selection of components from the secondary market, including power steering elements, the guide "Safe purchase of used car parts online – a step-by-step guide" may be useful, which describes practical methods for verifying parts, selection by OEM, and good purchasing practices for drivers and workshops.