Power Steering Pump Mercedes W639 W906 OM651 Mechanical Oil Unit A0064666601

Power Steering Pump Mercedes W639 W906 OM651 Mechanical Oil Unit is a precision steering system component designed to work with the OM651 unit in Mercedes commercial models. This used, original hydraulic pump ensures stable pressure in the power steering system, which translates into confident vehicle handling and maneuvering comfort even under full load. It is a solution for users expecting a proven design and factory fitment for specific Mercedes series.

Specifications and technical data

• SKU: A0064666601-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0064666601
• Substitutable numbers: A0064666601, A 006 466 66 01, 7693 900 524
• Category: Power Steering Pumps

Purpose and function in the power steering system

The described pump belongs to the Power steering pumps group and is responsible for generating operating pressure in the hydraulic steering system. In Mercedes W639 and W906 series vehicles with the OM651 engine, this component is crucial for:

• maintaining light, predictable steering operation at both low and high speeds,
• stable steering gear performance during intensive use,
• reducing mechanical loads throughout the entire steering system.

The hydraulic design of the pump is adapted to the characteristics of the OM651 power unit and the loads typical for commercial vehicles, which promotes consistent system performance during long-term fleet operation.

Original origin and installation compatibility

The power steering pump was developed for the Mercedes brand using Bosch technology, ensuring compliance with the vehicle manufacturer's factory requirements. This means:

• preservation of the original geometry of mounts and hydraulic connections,
• proper cooperation with factory OM651 engine equipment,
• possibility of selection by OEM number and available interchangeable numbers without the need for adaptation.

Thanks to this, the pump is suitable as a replacement part in professional service centers, workshops servicing fleets, and for individual users who expect compatibility with the factory system.

Performance characteristics and condition of the part

The presented power steering pump is marked as used, which makes it an attractive cost-effective alternative to new OEM components. This type of part is particularly interesting for:

• maintenance repairs in high-mileage vehicles,
• reducing service costs while maintaining original specifications,
• restoring the efficiency of the power steering system after a pump failure or seizure.

The original manufacturer markings and the assigned OEM part number facilitate verification of compatibility with a specific vehicle configuration, and the available interchangeable numbers allow for a quick comparison with the currently installed element.

Selection by number and technical support

To ensure the correct selection of the pump for a specific Mercedes unit, it is worth using the manufacturer's markings and reference numbers. In case of doubt, a visual comparison with the removed element and verification of the engine type (OM651) and body series (W639, W906) may also be useful. For organizing information on the selection and regeneration of engine supply components, the guide article Fuel system – injectors, pumps and fuel tank: maintenance and regeneration, which discusses, among other things, the principles of identifying parts by OEM and VIN numbers, will be helpful.

Expansion of Mercedes steering system service

If you are planning a comprehensive repair or upgrade of the steering system area in your Mercedes and need other elements from the same group, such as hydraulic hoses, fluid reservoirs, or additional mounting elements, check the available parts in the Mercedes Power steering pumps category.

For full product identification in warehouse and service systems, you can use the SKU designation, which will facilitate order processing and communication with the technical department.