Audi RS3 8P TTRS 8J Fuel Pipe Hose Line 2.5 TFSI Petrol Engine 07K127509A

Audi RS3 8P TTRS 8J Fuel Pipe Hose Line 2.5 TFSI Petrol Engine is an original component from the Lines, hoses and pipes group, designed for operation in the petrol engine fuel supply system. Thanks to its factory-set geometry and precise fit for the 2.5 TFSI unit, it ensures stable fuel delivery and predictable system performance under both road and track conditions.

Specifications and technical data

• SKU: 07K127509A
• Mark: Audi
• Condition: Used
• OEM Part Number: 07K127509A
• Substitutable numbers: 07K127509A, 07K 127 509 A
• Fuel type: Petrol
• Part type: Line
• Rim width: 8
• Category: Hoses, Lines & Pipes

Purpose and function in the fuel system

The described fuel pipe operates within the 2.5 TFSI petrol engine supply system, responsible for the controlled transport of fuel between system components. The design, matched to the characteristics of the units used in the Audi RS3 8P and TTRS 8J, allows for maintaining proper flow parameters, which is significant for both performance and engine stability.

This component is particularly important in turbocharged engines, where the fuel system operates under increased load. A properly selected pipe reduces the risk of pressure drops, leaks, and unwanted vibrations in the installation.

Construction, fitment and technical parameters

The pipe belongs to the Lines, hoses and pipes group, meaning it has been designed to operate in a petrol fuel environment, taking into account resistance to temperature, pressure, and typical operational loads. The shape, connection diameters, and length are adapted to the factory routing in the engine bay, which facilitates installation and allows for maintaining the original installation path.

The product is a used item, which in practice means it comes from disassembly and can be a cost-effective solution while maintaining compliance with factory specifications.

Benefits of using an original fuel pipe

Using a fuel pipe dedicated to the 2.5 TFSI unit in the Audi RS3 8P and TTRS 8J allows for maintaining the consistency of the entire supply system. Key advantages include:

• Factory fitment – compatibility with the original fuel system geometry and mounting points.
• Stable flow parameters – the pipe is designed to work with petrol fuel in a high-power engine.
• Reduced risk of leaks – proper matching of diameters and connection types with other system components.
• Possibility of economical repair – a used component allows for lower service costs while maintaining compliance with the factory solution.

For workshops and individual users, this means easier diagnostics, predictable system behavior, and no need to modify the fuel installation.

Application in service practice

This type of fuel pipe is suitable both for standard replacement of a worn component and for more extensive work on the 2.5 TFSI unit, e.g., after modifications to engine accessories. Replacing the pipe is recommended in situations where there are signs of leaks, mechanical damage, material hardening, or problems with maintaining proper fuel pressure.

Due to the specific operation of a high-power petrol engine, selecting a pipe consistent with factory specifications is important for safety, durability, and performance repeatability. The original design facilitates installation and reduces the time required to fit the component in the engine bay.

System expansion and additional technical materials

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

For more advanced drivetrain modifications – especially in vehicles with increased power or all-wheel drive – materials regarding the diagnostics and selection of clutch components and dual-mass flywheels may also be helpful. In such a case, it is worth reading the article Clutch and dual-mass flywheel – diagnostics and selection of drivetrain parts, which discusses practical aspects of configuring the entire drivetrain system.