VW Volkswagen Amarok NF Coolant Cooling Pipe Hose Line 3.0 TDI 2HJ122073J

VW Volkswagen Amarok NF Coolant Cooling Pipe Hose Line 3.0 TDI is a cooling system component designed for diesel engines, engineered in accordance with Volkswagen manufacturer standards. It is responsible for the stable flow of coolant, which has a direct impact on the safe operating temperature of the 3.0 TDI unit and the durability of the entire powertrain.

Specifications and technical data

• SKU: 2HJ122073J
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 2HJ122073J
• Substitutable numbers: 2HJ122073J, 2HJ 122 073 J, MB3G-18K580-PC, MB3G18K580PC
• Fuel type: Diesel
• Part type: Pipe
• Category: Coolant Hoses

Purpose and role in the cooling system

The coolant hose used in the Amarok NF model with a diesel engine operates in the coolant circuit between key components of the power unit. A properly shaped water pipe ensures:

• stable flow of the cooling medium under 3.0 TDI engine load conditions,
• proper dissipation of excess heat from the engine block and accessories,
• reduced risk of overheating while driving with a load or off-road.

Thanks to its fitment for the specific configuration of the Amarok NF, the hose works with the factory cooling system without the need for installation modifications.

Construction and fitment for the Volkswagen Amarok NF

The element belongs to the Cooling system hoses and pipes group, which means that its geometry, connection diameters, and routing have been developed for the structural requirements of the Amarok NF engine bay. Proper profiling of the hose:

• facilitates correct placement in the tight space of the engine bay,
• minimizes stress resulting from the operation of the power unit,
• reduces the risk of rubbing against other components.

Original origin from the Volkswagen group helps maintain factory flow parameters and compatibility with other cooling system components.

Operating characteristics in the 3.0 TDI diesel engine

3.0 TDI diesel engines generate high thermal loads, which is why the water hose must work with the cooling system across a wide range of temperatures and pressures. In practice, this means:

• resistance to coolant temperature changes in the start-up to full-load cycle,
• dimensional stability during long-term operation,
• maintaining tightness after proper installation on connectors and joints.

A well-chosen water hose supports uniform cooling of the 3.0 TDI unit, which translates into predictable engine operation and reduced risk of failures related to overheating.

Benefits of using an original water hose

Using a hose dedicated to the Amarok NF allows for consistency with factory service documentation and facilitates future diagnostics. The main advantages include:

• secure fitment to the cooling system of the specific Volkswagen model,
• maintenance of the flow characteristics designed by the manufacturer,
• the ability to use existing brackets and mounts in the engine bay.

An element from this group is particularly important when replacing damaged or leaking sections of the cooling installation, when you want to maintain parameters close to factory specifications.

Support with selection and additional materials

If you are planning a comprehensive repair or upgrade of the engine area in your Volkswagen and need other elements from the same group, such as flexible hoses, rigid pipes, or water connectors, check the available parts in the Volkswagen cooling system hoses and pipes category.

To better understand how summer conditions affect engine operating temperature and cooling hose load, it is worth checking out our guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings, where you will find practical tips on operating and checking the cooling system in high temperatures.