Audi Q3 8U Water Coolant Hose Tube Line Pipe 2.0 TDI DFTA Diesel 5Q0122073AE

Audi Q3 8U Water Radiator Hose 2.0 TDI DFTA Diesel is an original cooling system component designed for diesel engines. It ensures stable coolant flow between components, which translates to a safe operating temperature for the engine and reduces the risk of overheating. This is a practical solution for users who want to maintain the factory cooling system performance in their Audi.

Specifications and technical data

• SKU: 5Q0122073AE
• Mark: Audi
• Condition: Used
• OEM Part Number: 5Q0122073AE
• Substitutable numbers: 5Q0122073AE, 5Q0 122 073 AE
• Fuel type: Diesel
• Category: Coolant Hoses

Purpose and Role in the Cooling System

The water radiator hose in the Audi Q3 8U with a 2.0 TDI engine is responsible for the controlled flow of coolant between the radiator and other system components. A correctly selected hose minimizes pressure drops, reduces the risk of leaks, and supports even heat dissipation from the diesel engine.

This item, from the Cooling System Hoses and Pipes category, is particularly important in diesel engines, where thermal loads are higher, and stable operating temperature directly impacts the durability of accessories and driving comfort.

Benefits of Using an Original Audi Hose

Using a hose from the same design line as the factory Audi equipment allows you to maintain:

• the correct routing of the hose relative to the engine and radiator,
• the appropriate stiffness and flexibility of the walls under diesel engine operating conditions,
• compatibility with factory clamps, spigots, and mountings.

This ensures an organized installation and reduces the risk of stress, abrasion, or rubbing against adjacent components. This is especially important in modern engine bays where space is limited.

Technical Characteristics and Fitment

The hose has been designed to work with compression-ignition engines, so its construction takes into account the typical operating temperatures and pressures for diesel units. The appropriately selected inner diameter and hose geometry support the correct operation of the coolant pump and maintain proper fluid circulation throughout the system.

The component is designed for a specific configuration of the Audi Q3 8U model, which simplifies part selection without the need for modifications or fitting universal alternatives. In practice, this means predictable cooling system behavior after hose replacement.

Item Condition and Service Application

The offered hose is a used part, allowing for an economical repair of the cooling system while maintaining the original manufacturer's specifications. This type of solution is often chosen for servicing heavily used vehicles where a reasonable balance between repair cost and maintaining factory operating parameters is important.

The hose is suitable for both a standard replacement of a worn-out part and for more extensive service work on the cooling system – for example, after a radiator failure, damage to the mechanical part of the hose, or for preventive replacement of rubber components in older vehicles.

Technical Support and Additional Materials

To better understand the impact of hoses and other components on engine durability, it is worth reading the guide on cooling system diagnostics and service: Engine Cooling System – Overheating, Repair, and Used Radiators. The article discusses practical aspects of operation and helps assess when hose replacement is justified.

If you are planning a comprehensive repair or upgrade of the cooling system area in your Audi and need other parts from the same group, such as additional pipes, hoses, or fluid connectors, check the available parts in the Audi Cooling System Hoses and Pipes category.