Audi TT 8J Engine Cooling System Coolant Line Pipe Hose 3C0122073BR

Audi TT 8J Engine Cooling System Coolant Line Pipe Hose is a component from the Lines, hoses and pipes group, designed for the cooling system in Audi vehicles. It is responsible for the stable flow of coolant, which has a direct impact on the safe operation of the engine and the maintenance of the correct operating temperature. Thanks to its factory geometry and fitment for a specific application, this coolant hose allows for precise installation without the need for modifications.

Specifications and technical data

• SKU: 3C0122073BR
• Mark: Audi
• Condition: Used
• OEM Part Number: 3C0122073BR
• Substitutable numbers: 3C0122073BR, 3C0 122 073 BR
• Rim width: 8
• Category: Hoses, Lines & Pipes

Purpose and function in the cooling system

Audi TT 8J Engine Cooling System Coolant Line Pipe Hose operates within the coolant circuit, connecting individual system components into a single, leak-proof unit. The properly shaped cross-section and routing of the hose reduce the risk of kinks, constrictions, or uncontrolled vibrations that could cause a drop in cooling efficiency. Proper routing of the hose is crucial for even temperature distribution in the engine unit, which translates into its durability and operational stability.

The component belongs to the Lines, hoses and pipes group, meaning it has been designed to work under variable pressure and elevated temperatures. The construction of the hose is adapted to the conditions prevailing in the engine compartment, including vibrations, load changes, and cyclic temperature fluctuations.

Benefits of using an original Audi hose

Using an original Audi component in place of a worn or leaking coolant hose allows for the restoration of the cooling system's factory performance parameters. The main advantages of this solution include:

• maintaining proper coolant flow across the entire engine RPM range,
• reducing the risk of engine overheating,
• stable mounting in factory attachment points,
• compatibility with original connectors and mounting clamps.

Thanks to this, the coolant hose can be used both for standard maintenance replacements and for more extensive service work related to the cooling system.

Operational characteristics and installation

The offered element is an OEM product, which means its geometry, connection diameters, and routing have been matched to the specific vehicle configuration. This facilitates installation and minimizes the risk of leaks resulting from improper fitment. The coolant hose is adapted to work in conditions typical for the engine compartment, where both high temperatures and vibrations as well as thermal load changes occur.

The used condition allows for an economical replacement of the component while maintaining the original design and fitment. This solution is particularly beneficial for repairs where the priority is to combine reasonable costs with maintaining the factory operating parameters of the system.

Application in service and modernization

This coolant hose will prove effective both in standard service repairs and during cooling system upgrades when it is necessary to replace several components simultaneously. It can be used as a replacement for worn, brittle, or leaking hoses, restoring proper coolant circulation. Due to its compatibility with the Audi brand, the component works well with other system parts, such as the radiator, connectors, or thermostat housings.

If you are planning a comprehensive repair or modernization of the engine area in your Audi and need other elements from the same group, such as coolant lines, return hoses, or connecting pipes, check out the available parts in the Audi lines, hoses and pipes category.

Why choose used original parts

In the face of rising costs for new components and the variable availability of parts for premium segment cars, used OEM elements represent a reasonable compromise between price and quality. Original Audi coolant hoses retain their factory geometry and fitment, which is particularly important in systems where leak-tightness and proper fluid flow are essential. For drivers who want to consciously plan repairs and avoid problems with the availability of new subassemblies, the following article may be helpful: Crisis in the new parts market? Why used originals for premium cars are the hottest trend in 2026.