Audi A6 C8 Engine Water Coolant Pipe Hose Line 2.0 TFSIe 4K0145365

The Audi A6 C8 2.0 TFSI e Engine Coolant Hose is an original part from the Cooling System Hoses and Pipes group, designed for operation in the coolant circuit of a hybrid unit. Thanks to its factory geometry and fit to the engine bay mounts, it ensures stable fluid flow and proper cooperation with other system components.

Specifications and technical data

• SKU: 4K0145365
• Mark: Audi
• Condition: Used
• OEM Part Number: 4K0145365
• Substitutable numbers: 4K0145365, 4K0 145 365
• Part type: Hose
• Category: Coolant Hoses

Purpose and Function in the Cooling System

This hose has been specifically designed for use in the Audi A6 C8 generation with the 2.0 TFSI e drive, where the cooling system operates under the variable thermal load typical of hybrid units. It is responsible for controlled coolant flow between engine and auxiliary components, which translates to stable operating temperatures and protection of components against overheating.

Thanks to its precisely selected shape and internal diameter, the hose maintains proper fluid flow, minimizing the risk of local turbulence and pressure drops. This is particularly important in modern units where the cooling system interacts with advanced control electronics.

Construction and Fit for Audi A6 C8 2.0 TFSI e

Original origin from the Audi brand means adherence to factory dimensional tolerances and compatibility with brackets, spigots, and other hoses in the engine bay. The hose is shaped to bypass critical components, avoid interference with auxiliary equipment, and maintain safe distances from heat sources.

The OEM solution reduces the need for installation modifications – the part fits into factory mounting points, facilitating servicing and reducing replacement time. This is especially important in the densely packed space of the 2.0 TFSI e unit, where every millimeter counts for proper hose routing.

Used Condition and Service Aspects

The item is offered in used condition, allowing for economical repair of the cooling system while maintaining the original manufacturer's specifications. A used coolant hose is a solution often chosen for post-accident repairs, replacement after mechanical damage, or when upgrading the engine's fluid circuit.

Before installation, standard service procedures are recommended: checking connection tightness, verifying clamp condition, and bleeding the system after filling with fresh coolant. Properly performed installation minimizes the risk of leaks and ensures stable operation of the entire system.

Benefits of Using an Original Coolant Hose

• Factory fit to the Audi A6 C8 2.0 TFSI e cooling system without modifications.
• Consistency with other parts in the Cooling System Hoses and Pipes category for this model.
• Reduced risk of leaks due to maintaining original hose geometry and diameter.
• Economical service solution through the use of a used part with OEM specifications.

For users who want to better understand the impact of temperature on engine operation and the entire fluid circuit, a guide describing how high temperatures affect cooling and when it is worth considering used components will be useful – you can find it in the article “Summer Heat vs. Cooling System: Used Radiators and Fans Guarantee Savings”.

Integration with Other Audi Cooling System Components

In modern powertrains, the consistency of all hoses, pipes, and connectors within the coolant circuit is particularly important. Using an original hose facilitates diagnostics, as fluid flow parameters and routing remain consistent with the manufacturer's design. This, in turn, supports the correct operation of temperature sensors and controllers responsible for circuit regulation.

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

You can read more about the advantages of using original, used OEM components in terms of safety and cost-effectiveness of repairs in the guide on the quality and advantages of used original OEM parts.