Audi A3 8V 2.0 TFSI CHHB Fuel High Pressure Pipe Line Hose Tube 06K133986AK

Audi A3 8V 2.0 TFSI CHHB Fuel High Pressure Pipe Line Hose Tube is a component from the Lines, hoses and pipes group, designed for the fuel supply system in Audi vehicles with diesel engines. This used OEM part ensures factory-standard fuel routing geometry, which promotes stable engine operation and reduces the risk of leaks in the supply line.

Specifications and technical data

• SKU: 06K133986AK
• Mark: Audi
• Condition: Used
• OEM Part Number: 06K133986AK
• Substitutable numbers: 06K133986AK, 06K 133 986 AK
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and function in the fuel system

The described fuel line is responsible for the controlled transport of diesel fuel within the engine's supply system. A correctly selected and leak-free line minimizes pressure drops, supports stable fuel delivery, and limits the risk of air entering the system, which directly impacts engine performance and ease of starting.

Thanks to a design consistent with factory specifications, the line maintains the correct routing relative to other engine bay components, reducing the risk of abrasion, excessive vibration, and contact with high-temperature elements.

Benefits of using an original Audi line

Using an original Audi fuel line instead of a worn-out component allows you to maintain fuel system operating parameters in accordance with the manufacturer's specifications. This is particularly important in modern diesel engines, where the precision of fuel delivery and the integrity of the supply line are crucial for performance, fuel consumption, and exhaust emissions.

• factory fit for the diesel engine supply system,
• maintenance of correct line routing in the engine bay,
• reduction of the risk of leaks and fuel pressure drops,
• stable operation of the injection system under load.

For the user, this means more predictable vehicle behavior, a lower risk of failures related to leaks, and easier diagnostics of potential faults in the future.

Installation and operational characteristics

The fuel line from this component group is designed for a specific supply system, which facilitates installation and avoids the need for system modifications. The used OEM part retains the original mounting points and shape, allowing it to be integrated into the existing system without the need to interfere with other components.

A properly selected fuel line reduces the risk of:

• micro-leaks causing air to enter the system,
• abrasion resulting from incorrect line routing,
• localized overheating near hot components.

This solution is particularly beneficial for users who expect to maintain the factory fuel system configuration while keeping service costs reasonable.

Application in diesel engine vehicles

Diesel engines are sensitive to the quality and continuity of fuel supply, which is why choosing the right line is essential for the durability of the entire system. The fuel line dedicated to diesel units supports correct operating pressure and stable flow, which translates into smooth injector operation and reduces the risk of damage to precision components.

Replacing a worn or damaged line with an original component from this group is especially recommended when symptoms such as starting difficulties, power loss, unstable idle, or visible signs of fuel leaks in the engine bay appear.

System expansion – related components

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

For drivers interested in improving performance while maintaining reasonable operating costs, a guide on modifications using used components may also be useful – more information can be found in the article Tuning with used parts – how to gain performance without spending a fortune.