Audi A6 C8 Coolant Water Pipe Hose Line 50 TFSIe 4K0145920S

The Audi A6 C8 Coolant Hose Pipe 50 Tfsie is an original cooling system component designed for precise coolant flow within the engine unit. Thanks to its factory fit for the Audi's construction, it ensures stable engine operating parameters and proper coolant circulation, which translates to safe vehicle operation.

Specifications and technical data

• SKU: 4K0145920S
• Mark: Audi
• Condition: Used
• OEM Part Number: 4K0145920S
• Substitutable numbers: 4K0145920S, 4K0 145 920 S
• Part type: Hose
• Category: Coolant Hoses

Purpose and Function in the Cooling System

This hose belongs to the Cooling System Hoses and Pipes group, responsible for transporting coolant between key engine components. A properly selected coolant hose:

• maintains the coolant circuit's seal under varying temperatures and pressures,
• ensures adequate flow of the cooling medium in the engine area,
• minimizes the risk of engine unit overheating,
• reduces thermal stress on other auxiliary components.

For 50 TFSI e units, a correctly functioning coolant hose is particularly important for maintaining stable operating temperatures and the durability of components interacting with the hybrid system.

Construction and Fit for Audi A6 C8

The hose in question has been specifically designed for the engine bay architecture of the Audi A6 C8 generation. This means:

• geometry matched to factory mounting points,
• appropriately selected internal and external diameters for standard connectors,
• adherence to required bending radii, preventing kinks and flow restriction.

This ensures a streamlined installation process without the need for modifications or additional adapters, and the hose does not interfere with other engine components.

Benefits of Using an Original Coolant Hose

Using an original hose in the Audi A6 C8 allows for the maintenance of factory cooling system operating parameters. Key benefits include:

• Compatibility with the cooling system – the hose works with the standard pump, radiator, and other circuit components,
• stable material behavior at high temperatures,
• resistance to coolant and typical operational loads,
• maintenance of proper rigidity, reducing vibrations and stress on connectors.

For the user, this means predictable cooling system behavior and a reduced risk of failures due to leaks or hose deformation.

Characteristics of a Used Part

The offered hose is a used part, allowing for economical repairs while maintaining the original manufacturer's specifications. A used part of this type is particularly attractive in situations where:

• a damaged section of the cooling system needs a quick replacement,
• you want to maintain consistency with Audi's factory solutions,
• you aim to reduce service costs while preserving the original design.

Before installation, a standard check of the seal and the condition of the connection surfaces is recommended to ensure proper functioning across the entire operating temperature range.

Technical Support and Related Components

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

To better understand the impact of efficient coolant circulation on engine unit durability and the symptoms of overheating, it is worth reading the guide: Engine Cooling System – Overheating, Repair, and Used Radiators. This will help you assess when a coolant hose replacement is necessary and how to select the right components for your car.