BMW 5 SERIES E39 E60 M5 E61N E63 E64 M6 Oil Carrier Fluid Power Steering Pumps

Description

BMW 5 SERIES E39 E60 M5 E61N E63 E64 M6 Oil Carrier Fluid Power Steering Pumps is an original hydraulic system component designed for BMW sports models, responsible for the safe storage and stable supply of oil in the power steering system. Thanks to the factory BMW design, the reservoir ensures proper circulation of the working medium, which translates into precise steering operation and predictable vehicle handling. This is a solution for users looking for a proven, compatible component instead of random aftermarket replacements.

Specifications and technical data

• SKU: 2228855
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 32412228855
• Substitutable numbers: 32412228855, 2228855
• Category: Power Steering Pumps

Purpose and function in the power steering system

The presented oil reservoir operates within the hydraulic system responsible for power steering in the BMW 5 Series E60 M5 and E63 M6. Its task is to maintain the correct amount of working oil, stabilize pressure, and filter out mechanical impurities that may appear in the circuit. A properly selected reservoir reduces the risk of cavitation, pressure drops, and excessive pump wear, which directly affects the smoothness and ease of steering operation.

This component works with high and low-pressure hoses and the power steering pump, creating a coherent, closed circuit. Thanks to the factory geometry of the connectors and a properly designed working volume, the reservoir ensures proper system venting and stable operating conditions across a wide range of temperatures and loads.

Construction and fitment for BMW E60 M5 / E63 M6

The reservoir has been designed as an original BMW part, which means it retains factory mounting points and is compatible with standard hose routing. This design facilitates installation and allows for the use of standard brackets and clamps, without the need for modifications or custom-made parts.

Key design features include, among others:

• a dedicated body shape tailored to the engine bay of the E60/E63 generation M5 and M6 models,
• integrated connection ports for power steering hoses,
• an internal working chamber designed to stabilize oil flow.

As a result, the reservoir maintains full compatibility with the factory hydraulic system, and its installation does not negatively affect adjacent components in the engine bay.

Condition, origin, and benefits of using a used part

The offered reservoir comes from the group of original BMW components and is a used item, which allows for combining reasonable costs with the preservation of factory specifications. Unlike many cheap replacements, the original reservoir ensures proper fitment, predictable material behavior over a long service life, and compliance with the vehicle manufacturer’s requirements.

Using a used but original component is particularly beneficial in high-performance cars such as the M5 and M6, where the power steering system operates under increased load. A properly selected reservoir helps reduce the risk of leaks, oil overheating, and unwanted pump noise, which translates into stable vehicle handling.

Installation and maintenance tips

When replacing the power steering oil reservoir, it is recommended to:

• check the condition of hoses and clamps and replace them if there are signs of wear,
• thoroughly bleed the system after installation,
• use oil with the specifications recommended by the vehicle manufacturer,
• check for leaks after the first operating cycles of the system.

This approach allows you to fully utilize the potential of the part and minimize the risk of needing further intervention in the hydraulic system shortly after the repair.

System expansion and selection of other elements

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 hoses, a pump, or additional reservoirs, check the available parts in the BMW Power Steering Pumps category.

When selecting hydraulic components, it is worth paying attention to compliance with manufacturer markings and the vehicle’s service history. Technical materials regarding the operation of systems with working fluids, diagnostic principles, and component regeneration may be helpful – these issues are discussed in more detail in the article “Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration”, which describes, among other things, best practices for selecting parts by manufacturer markings and the principles of safe operation of liquid-powered systems.

Summary

BMW 5 SERIES E39 E60 M5 E61N E63 E64 M6 Oil Carrier Fluid Power Steering Pumps is a functional, original power steering system component designed specifically for BMW sports models. It ensures proper oil circulation, stable pump operating conditions, and predictable steering behavior. Choosing this component is a sensible solution for users who expect factory fitment, technical consistency with the rest of the system, and controlled maintenance costs.