Oil Radiator BMW E70 E71 3.0d 3.0sd Diesel M57N2 Power Steering Cooler 7801944

Oil Radiator BMW E70 E71 3.0d 3.0sd Diesel M57N2 Power Steering Cooler is an original hydraulic system component designed for diesel engine models. It ensures stable cooling of the power steering fluid, which translates into reliable steering rack operation and a longer service life for other components. This is a practical solution for users who want to maintain the factory handling parameters of their BMW.

Specifications and technical data

• SKU: 7606348
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7606348
• Substitutable numbers: 17217606348, 7606348, 17217801944, 7801944
• Fuel type: Diesel
• Category: Other Steering & Suspension Parts

Function and application in the power steering system

The power steering oil cooler in BMWs with the M57N2 unit is responsible for dissipating excess heat from the oil circulating in the hydraulic system. Maintaining the correct temperature of the working medium:

• stabilizes pressure in the power steering system,
• limits the drop in oil viscosity under heavy load,
• reduces the risk of overheating the pump and hoses,
• positively affects the operating smoothness of the steering gear.

For Diesel engine vehicles, this is particularly important during highway driving, trailer towing, or dynamic operation, where the power steering system works under higher thermal stress.

Compatibility and technical parameters

The presented cooler is a component intended for BMW E70 and E71 series vehicles with the M57N2 diesel engine. Using the original design ensures:

• proper fitment to factory mounts and hoses,
• compatibility with the serial routing of oil lines,
• preservation of the cooling efficiency designed by the manufacturer.

As a result, installation is straightforward, without the need for system modifications or the use of additional adapters.

Product characteristics and condition

The cooler comes from dismantling and is offered as a used original BMW component. This type of part allows for maintaining the consistency of the entire hydraulic system with factory solutions, which is important both from the perspective of durability and subsequent maintenance. A used OEM component is also a reasonable compromise between repair costs and maintaining high manufacturing quality.

Choosing an original power steering oil cooler is particularly recommended for cars with diesel engines, where the steering system is exposed to long-term thermal and mechanical loads.

Benefits of using an original cooler

Using a factory power steering oil cooler in the BMW E70/E71 M57N2 provides a number of practical benefits:

• Stable power steering operation – reduction of performance drops when the oil is hot.
• Better protection of the pump and steering gear against excessive wear.
• Consistency with service documentation and manufacturer diagrams.
• Possibility of seamless integration with other hydraulic system components.

For users who value predictable handling and maneuvering comfort, maintaining a functional power steering oil cooling system is an essential element of operational maintenance.

Related components and additional information

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as oil lines, reservoirs, or additional radiators, check the available parts in the Other BMW category.

When selecting components for high-performance or intensively used cars, it is worth paying attention to differences in the design of drive and cooling systems – these are described in more detail in an article on our blog: Audi RS vs other models – what is hidden under the hood and chassis?.

If you want to efficiently complete a larger set of original used parts – from engine components to small mounting accessories – the guide on One-Stop-Shop shopping may be helpful: how to complete used car parts in one place.