Audi A6 C8 Water Coolant Pipe Hose Line 50 TFSIe 4K0145963C

The Audi A6 C8 Coolant Hose Pipe 50 TFSIe is an original part from the Cooling System Hoses and Pipes group, designed for use in the thermal system of the 50 TFSIe hybrid powertrain. Designed by the vehicle manufacturer, it ensures proper coolant flow and stable temperature conditions for engine components and accessories.

Specifications and technical data

• SKU: 4K0145963C
• Mark: Audi
• Condition: Used
• OEM Part Number: 4K0145963C
• Substitutable numbers: 4K0145963C, 4K0 145 963 C
• Part type: Hose
• Category: Coolant Hoses

Purpose and Function in the Cooling System

This coolant hose is a component of the system responsible for controlled fluid flow between key engine and accessory components in the Audi A6 C8 generation, 50 TFSIe version. The appropriately shaped pipe allows for:

• stable maintenance of coolant circulation in the engine and accessory area,
• reduction of local overheating risk through proper medium routing,
• preservation of the cooling system's factory geometry, facilitating installation and servicing.

Thanks to its adaptation to the specific hybrid drive configuration, the hose works with the existing cooling system architecture without requiring modifications to other components.

Construction and Fit for Audi A6 C8 50 TFSIe

The hose has been designed as a dedicated element for the specific vehicle platform, which translates to precise routing within the engine bay. The appropriate length, shape, and mounting points enable:

• collision-free routing of the hose relative to other components,
• maintenance of the correct bending radius, minimizing material stress,
• preservation of connection seal integrity with proper installation.

Such a fit contributes to maintaining stable cooling system operating parameters and facilitates service checks during vehicle operation.

Benefits of Using an Original Hose

Using an original coolant hose in the Audi A6 C8 50 TFSIe maintains the structural integrity of the entire system. In practice, this means:

• compatibility with factory quick connectors and mounting clamps,
• predictable material behavior within typical operating temperature ranges,
• easier diagnosis of potential leaks due to maintaining the original hose routing.

For the user, this translates to more predictable cooling system operation and a reduced risk of problems arising from the use of ill-fitting parts.

Characteristics of a Used Part

The offered hose comes from a used vehicle, allowing for an economical restoration of cooling system efficiency while maintaining the original manufacturer's specifications. This type of component is particularly attractive when the priority is:

• reducing repair costs while using parts from the same construction group,
• preserving the factory routing of hoses in the engine bay,
• minimizing intervention in the existing cooling system to the essential minimum.

Choosing a used OEM part is a sensible compromise between cost and maintaining system operating parameters.

Cooling System and High-Temperature Operation

A functional coolant hose is particularly important during the summer, when the thermal load on the powertrain increases. Proper fluid flow through the cooling system supports stable engine operation, as well as that of its cooperating components. If you want to better understand the impact of high temperatures on the entire cooling system and the possibilities of using used components in this area, check out the guide Summer Heat vs. Cooling System: Used Radiators and Fans Guarantee Savings.

Expanding Audi Cooling System Upgrades

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 hoses, return hoses, or connections to the radiator, check the available parts in the Audi Cooling System Hoses and Pipes category.