BMW 1 3 Series E87 E90 E91 1 Power Steering Rack Expansion Hose Pipe 6779313

BMW 1 3 Series E87 E90 E91 Power Steering Rack Expansion Hose Pipe is an original hydraulic component designed to work with the steering rack in 1 and 3 Series models. Thanks to its factory geometry and precise fit to the pressure system, it ensures stable steering performance and predictable vehicle handling. This is a practical solution for users who want to restore the proper operation of the steering system without compromising on compatibility.

Specifications and technical data

• SKU: rhd-6779313-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6779313
• Substitutable numbers: 32416779313, 6779313, BG
• Category: Power Steering Pumps

Purpose and function in the power steering system

The presented expansion hose is a hydraulic system component that works with the steering rack in BMW 1 Series E87 and 3 Series E90/E91 vehicles. It is responsible for the proper routing of the working fluid between the individual components of the system, which translates into stable pressure and predictable steering response. Using an original part allows for maintaining factory performance parameters and reduces the risk of leaks resulting from mismatched shape or hose diameter.

Benefits of using an original BMW hose

Using an original hose in a BMW power steering system offers a number of practical advantages:

• maintaining the factory characteristics of the steering system,
• secure fit to the steering rack and other hydraulic components,
• reduced risk of leaks due to the correct profile and connectors,
• consistency with other power steering system components in the vehicle.

For users who prioritize consistency with the factory steering system design, choosing an original hose is a technically sound and long-term cost-effective solution.

Part condition and service application

The offered hose comes from the Power steering pumps group, but in practice, it serves as an essential supporting element in the entire hydraulic system. As a used part, it is primarily intended for service and repair applications where it is necessary to replace a damaged or leaking hose in an existing system. Choosing an original component allows for shorter installation time and avoids fitment issues typical of aftermarket parts with universal geometry.

System integration and selection by part numbers

The hose has been designed to work with the factory BMW power steering system, which facilitates its integration with the steering rack and other hoses and connectors. In service practice, the ability to select parts based on manufacturer markings and interchangeable numbers is particularly important, as it minimizes the risk of ordering errors. This allows the mechanic or user to precisely verify the compatibility of the part with a specific vehicle configuration and avoid additional downtime associated with replacing the wrong part.

Expanding power steering service and related BMW components

If you are planning a comprehensive repair or upgrade of the power steering area in your BMW and need other elements from the same group, such as pressure hoses, return hoses, or additional hydraulic sections, check out the available parts in the BMW Power steering pumps category.

For larger service tasks within vehicle systems – especially when the fuel system or other installations are being serviced in parallel – a guide on diagnostics and selecting elements by manufacturer markings may be helpful. In such a case, it is worth checking the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which discusses best practices for part identification, regeneration, and component operation.

Summary

BMW 1 3 Series E87 E90 E91 Power Steering Rack Expansion Hose Pipe is a functional, original hydraulic component intended for service replacement in BMW 1 and 3 Series vehicles. It ensures proper routing of the working fluid in the power steering system, supports stable steering rack operation, and helps maintain factory vehicle handling parameters. It is a sensible choice for users and workshops that prioritize technically correct solutions consistent with the manufacturer's design.