Audi A6 C8 A7 4K Coolant Pipe Hose Line 50 TFSIe 4K0265356AC

Audi A6 C8 A7 4K Coolant Pipe Hose Line 50 TFSIe is an original cooling system component from the Cooling system pipes and hoses group, designed for precise coolant circulation management in hybrid powertrains. Thanks to its factory origin from the Audi brand, it ensures proper geometric fitment and stable operating parameters of the thermal system.

Specifications and technical data

• SKU: 4K0265356AC
• Mark: Audi
• Condition: Used
• OEM Part Number: 4K0265356AC
• Substitutable numbers: 4K0265356AC, 4K0 265 356 AC
• Part type: Hose
• Category: Coolant Hoses

Function of the 50 TFSIe coolant pipe

The coolant pipe in 50 TFSIe versions is responsible for the controlled routing of fluid between system components, such as the engine block, heat exchangers, or auxiliary modules. A correctly selected pipe minimizes the risk of local overheating, stabilizes operating temperature, and supports the efficiency of the entire hybrid drive. The original geometry of the pipe ensures:

• an appropriate flow cross-section to maintain correct fluid pressure,
• stable routing in the engine bay without tension or twisting,
• compatibility with factory quick-connectors and cooling system clamps.

Why choose an original Audi pipe

Cooling system components in modern models, such as the A6 C8 and A7 4K, operate at elevated temperatures and under variable loads, especially in hybrid drives. Using an original pipe from the Cooling system pipes and hoses group reduces the risk of leaks, thermal deformation, and improper fitment with other components. Compared to cheap replacements, the factory pipe provides:

• maintenance of the designed material stiffness and flexibility,
• proper shaping for installation in the engine bay,
• consistency with the factory cooling strategy of the 50 TFSIe unit.

Component condition and service application

The offered pipe comes from disassembly, which allows for economical repair while maintaining the manufacturer's original specifications. This type of solution is particularly beneficial when servicing cooling systems in hybrid vehicles, where both structural compliance and maintenance cost control are important. The pipe can be used for:

• eliminating leaks in the coolant circuit,
• post-collision repairs within the engine bay,
• preventive maintenance when there is a suspicion of wear or mechanical damage to the existing pipe.

Cooling system safety and service knowledge

A functional cooling system is crucial for the durability of the powertrain, especially in vehicles with complex thermal architecture. It is worth consciously choosing components and avoiding random replacements with unverified parameters. If you want to better understand why original cooling system components are a safer choice than the cheapest replacements, read the article: Cooling system failure – why an original used radiator is a safer choice than a cheap replacement.

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 elements from the same group, such as additional pipes, flexible hoses, or return lines, check the available parts in the Audi cooling system pipes and hoses category.