Audi RS4 RS5 B8 8T Engine Coolant Hose Pipe 4.2 V8 CFSA 079121036C

Audi RS4 RS5 B8 8T Engine Coolant Hose Pipe 4.2 V8 CFSA is an original cooling system component designed for high-performance Audi models with the 4.2 V8 engine. Engineered as a factory part, it ensures precise fitment to the radiator and engine ports as well as stable coolant flow under demanding operating conditions. It is a practical solution for users who want to maintain the structural integrity of the cooling system and ensure proper thermal engine parameters.

Specifications and technical data

• SKU: 079121036C
• Mark: Audi
• Condition: Used
• OEM Part Number: 079121036C
• Substitutable numbers: 079121036C, 079 121 036 C
• Category: Coolant Hoses

Purpose and function in the cooling system

The presented hose belongs to the Cooling system hoses and pipes category and is responsible for transporting coolant between the radiator and the engine in Audi RS4 and RS5 B8 / 8T generation models with the 4.2 V8 CFSA engine. A correctly selected hose in this area is crucial for:

• maintaining a stable engine operating temperature,
• ensuring adequate coolant flow under high loads,
• reducing the risk of leaks at the connection points with the radiator and engine block.

Thanks to its factory geometry, the hose guides the coolant along the path designed by the manufacturer, which minimizes stress on the ports and adjacent components.

Advantages of using an original Audi hose

Using an original coolant hose in high-performance Audi models provides a number of practical operational benefits:

• Factory fitment – compatibility with the RS4/RS5 B8 8T cooling system with the 4.2 V8 CFSA engine without the need for modifications.
• Stable operation at high temperatures – the hose is designed for the loads typical of high-performance V8 engines.
• Reduced risk of leaks – properly shaped ends work perfectly with cooling system clamps and ports.
• Consistency with other system components – maintaining the original coolant flow concept throughout the entire assembly.

For users who drive their Audi RS4 or RS5 intensively, choosing this component allows for maintaining consistent cooling system performance and reducing the risk of engine overheating.

Product characteristics and installation

The hose has been designed as a component for installation in specific body and engine versions, which translates into service convenience. When replacing, it is worth paying attention to:

• checking the condition of the radiator and engine ports before installation,
• selecting appropriate hose clamps,
• correct routing of the hose according to the factory path.

This installation method allows for maintaining safe distances from hot and moving parts, which is important for the durability of the hose and the reliability of the entire cooling system.

Condition and service application

The item is offered in used condition, which is a reasonable choice for users looking for an economical solution while maintaining original specifications. In practice, it will work well both for standard replacement of a worn hose and during repairs after a cooling system failure, when it is necessary to quickly restore the vehicle's efficiency.

Due to its intended use in high-performance Audi models, the hose is particularly interesting for workshops specializing in the brand and for conscious users who want to maintain the factory character of the cooling system in their RS4 and RS5.

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other elements from the same group, such as return lines, flexible fluid supply sections, or additional branches for the oil cooler, check out the available parts in the Audi cooling system hoses and pipes category.

Technical support and cooling system maintenance

When selecting cooling system hoses for powerful V8 engines, it is worth paying attention to the general condition of the entire system – the radiator, fans, expansion tank, and the quality of the coolant. The proper configuration of these elements affects engine durability and the stability of its operating parameters at high ambient temperatures.

If you want to better understand how summer heat affects the cooling system and when it is worth considering replacing parts with used OEM components, check out the guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings, which practically discusses issues of operation and service cost optimization.