Audi A4 B9 2.0 TDI DETA Water Coolant Hose Line Tube Pipe 8W0122293AE

Audi A4 B9 2.0 TDI DETA Water Coolant Hose Line Tube Pipe is an original cooling system component designed for diesel engines, engineered for precise coolant circulation management. Thanks to its factory-spec geometry and perfect fit for the 2.0 TDI DETA unit, it ensures a stable connection between system components, supporting safe engine operating temperatures and long-term efficiency.

Specifications and technical data

• SKU: 8W0122293AE
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W0122293AE
• Substitutable numbers: 8W0122293AE, 8W0 122 293 AE
• Fuel type: Diesel
• Category: Coolant Hoses

Purpose and function in the cooling system

The presented connector/water hose operates within the cooling system, responsible for the directional flow of coolant between key components of the diesel engine. A correctly selected part from this group reduces the risk of localized overheating, leaks, and drops in cooling efficiency, which directly impacts the performance and refinement of the 2.0 TDI DETA unit.

The proper design of the connector and water hose helps maintain:

• stable coolant flow under typical road conditions,
• appropriate circuit pressure under diesel engine load,
• system integrity with other cooling lines and hoses.

Benefits of using an original Audi component

Using an original connector/water hose in the Audi A4 B9 2.0 TDI DETA ensures compatibility with the factory engine bay architecture, without the need for modifying other components. This solution is particularly beneficial during the servicing of diesel units, where precise hose geometry is crucial for proper fluid routing and avoiding stress on connections.

The main advantages of using this component include:

• maintaining compliance with the factory Audi cooling system,
• reducing the risk of leaks at connection points,
• maintaining predictable diesel engine operation across a wide temperature range.

Operational and installation characteristics

The part belongs to the Cooling system hoses and lines group, meaning it has been designed to operate in a coolant environment and under variable thermal loads. The used nature of the part allows for cost-effective repairs while maintaining the original design, which is particularly important when servicing vehicles that are used intensively.

When selecting and installing, it is worth paying attention to:

• compatibility with the 2.0 TDI DETA power unit,
• the condition of sealing surfaces and connection ends,
• proper routing of the hose relative to other elements in the engine bay.

Technical support and additional information

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other elements from the same group, such as additional lines, return hoses, or sections connecting the radiator to the block, check out the available parts in the Audi cooling system hoses and lines category.

To better understand the impact of an efficient cooling circuit on engine durability and the symptoms of overheating, it is worth reading the guide on our blog: Engine cooling system – overheating, repair, and used radiators. This will help you better assess when replacing cooling lines and hoses in your Audi A4 B9 2.0 TDI DETA is justified from the perspective of safety and continued operation.