BMW 1 3 Series E81 E87 E90 E91 Power Steering Oil Carrier Return Line 6774305

BMW E87 E90 Steering System Hose Pipe is a component of the hydraulic power steering system, designed for BMW 1 Series E87 and 3 Series E90 models. The original design from the Power Steering Pumps category ensures proper working fluid flow and stable steering gear operation, which translates to precise, comfortable vehicle control.

Specifications and technical data

• SKU: 6774305
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6774305
• Substitutable numbers: 6774305, 32416774305, 32416764794, 6764794, 32416771063, 6771063, PK
• Category: Power Steering Pumps

Purpose and Function in the Steering System

The BMW Steering System Hose Pipe is responsible for transporting hydraulic medium between power steering system components, maintaining proper working pressure. A correctly selected hose minimizes pressure drops, reduces the risk of cavitation in the pump, and supports uniform operation of the steering rack, which directly impacts driving stability and predictable steering response.

The component is designed as part of the OEM BMW system, ensuring correct routing geometry, fit with factory mounting points, and compatibility with original power steering system connectors.

Benefits of Using an Original BMW Hose

Using an original hose in the power steering system of a BMW E87/E90 allows for operational parameters close to factory specifications. Key benefits include:

• stable pressure in the power steering circuit, promoting smooth steering wheel rotation during parking maneuvers and city driving,
• appropriately selected hose diameter and shape, supporting correct hydraulic fluid circulation,
• maintenance of the original hose routing, which reduces the risk of chafing, twisting, and improper placement in the engine bay,
• compatibility with original mounting points and BMW steering system components.

This makes the hose a technically safe solution for replacing a worn or leaking component, without the need for system modifications.

Product Condition and Installation Aspects

The offered BMW E87 E90 Steering System Hose Pipe is a used part, allowing for economical repair of the power steering system while maintaining the original manufacturer's specifications. Before installation, standard verification of tightness, connector condition, and working surfaces is recommended, as well as checking the correct routing of the hose relative to moving parts in the engine bay.

When replacing the hose, it is advisable to:

• check the condition of other power steering system components (pump, rack, reservoir),
• use new seals at connection points,
• bleed the system after filling with fresh fluid compliant with BMW specifications.

Fitment by Numbers and System Integration

The component has a dedicated OEM part number and associated interchangeable numbers, facilitating precise identification and selection for a specific BMW E87 or E90 configuration. In practice, this means the possibility of verifying compatibility by part number, as well as by reference numbers used in service documentation and BMW catalogs, which is particularly important for differences arising from engine versions or production years.

For users who wish to deepen their knowledge about selecting and operating components that supply other vehicle systems, an article describing the diagnostics and maintenance of fuel components may be helpful – more information can be found in the material Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair.

Support for Part Selection and Related Information

If you are planning comprehensive service for the power steering system in your BMW and also need other hydraulic or structural components related to the power steering pump, check the available parts in the BMW Power Steering Pumps category.

When deciding between new and used parts, it is worth analyzing the cost-to-durability and quality of workmanship ratio; a practical comparison of different solutions can be found in the guide New or Used? A Comparison of Car Part Costs and Quality, which discusses, among other things, the advantages of using original BMW components from the aftermarket.