Audi A6 C8 Expansion Tank Water Coolant Pipe Hose Line 50 TFSIe 4K0145919P

The Audi A6 C8 Coolant Hose Pipe 50 TFSI is an original cooling system component from the Cooling System Hoses and Pipes group, designed for precise coolant flow management within the engine. This used OEM part ensures a factory fit, stable mounting, and predictable performance during daily operation. It's a practical solution for drivers looking to restore proper coolant circulation without investing in more expensive aftermarket alternatives.

Specifications and technical data

• SKU: 4K0145919P
• Mark: Audi
• Condition: Used
• OEM Part Number: 4K0145919P
• Substitutable numbers: 4K0145919P, 4K0 145 919 P
• Part type: Hose
• Category: Coolant Hoses

Function in the Audi A6 C8 Cooling System

The presented coolant hose pipe is responsible for controlled coolant flow between the components of the 50 TFSI gasoline engine's cooling system. A correctly selected hose:

• maintains the coolant circuit's seal,
• ensures stable medium flow in the intended direction,
• reduces the risk of engine overheating,
• minimizes the possibility of leaks at connections.

Thanks to its construction conforming to Audi factory standards, the hose integrates with other cooling system components without requiring modifications or diameter adjustments.

Construction and Cooling System Fitment

The water pipe is designed as a system element with appropriately shaped sections and ends, facilitating installation in the engine bay of the Audi A6 C8 generation. The applied hose profile allows for:

• coolant routing while maintaining required bending radii,
• avoiding interference with other engine bay components,
• maintaining proper positioning under thermal load.

The original mounting points and hose shape translate to a secure fit with factory brackets and spigots, which is crucial for long-term system sealing.

Benefits of Using an Original Cooling Hose

Using an original water hose in the Audi A6 C8 offers a range of practical operational benefits:

• factory hose geometry – no fitment issues with standard spigots and clamps,
• maintaining the manufacturer's designed coolant flow,
• reducing the risk of stress and cracks resulting from improper routing,
• compatibility with other 50 TFSI cooling system components.

For the user, this means stable cooling system operation and a reduced risk of failures related to engine overheating or coolant loss.

Used Part Condition and Practical Aspects

The offered hose is a used part, allowing for economical cooling system repair while maintaining original manufacturer specifications. This solution is particularly beneficial for comprehensive service work when multiple components are being replaced simultaneously. Choosing a used OEM component is a sensible compromise between cost and maintaining factory operating parameters.

If you want to better understand how high temperatures affect coolant circulation and why the condition of hoses is important for engine safety, check out the guide Summer Heat vs. Cooling System – How to Care for Radiators, Fans, and Hoses, where you'll find practical tips for operating your cooling system during the summer season.

Expanding Audi Cooling System Service

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, return hoses, or connecting sections, check out the available parts in the Audi Cooling System Hoses and Pipes category.

When planning to purchase used components for the cooling system or other parts, it's also worth reading the guide Used Parts – A Practical Guide to Cost-Effective Purchases at an Automotive Store, which will help you make informed choices for the aftermarket and effectively manage your service budget.