Audi A4 B7 2.0 TFSI BGB Oil Supply Feed Hose Line Pipe Tube 06D145778C

Audi A4 B7 2.0 TFSI BGB Oil Supply Feed Hose Line Pipe Tube is a component from the Oil coolers and lines group, designed for the turbocharging system in a gasoline engine. It is responsible for the precise delivery of oil to the turbocharger, which is crucial for its durability and the stable operation of the power unit. This is a practical solution for users looking for a proven, used component with factory geometry.

Specifications and technical data

• SKU: 06D145778C
• Mark: Audi
• Condition: Used
• OEM Part Number: 06D145778C
• Substitutable numbers: 06D145778C, 06D 145 778 C
• Fuel type: Petrol
• Category: Engine Oil Coolers & Lines

Function of the turbocharger oil line

The turbocharger oil line in the Audi A4 B7 2.0 TFSI BGB operates in a demanding environment of high temperature and pressure. Its task is to deliver the appropriate amount of lubricating oil to the turbine bearings, which reduces friction, dissipates heat, and stabilizes the rotor's operation. A properly selected line minimizes the risk of insufficient lubrication, thereby reducing the possibility of turbocharger damage and a drop in engine performance.

Benefits of using an original line

Using an oil line dedicated to a specific gasoline unit ensures:

• maintenance of the factory oil routing to the turbocharger,
• the correct internal diameter of the line, matched to the flow characteristics of the gasoline engine,
• compatibility with factory mounting points in the engine bay.

Thanks to this, the installation is orderly, and the turbine lubrication system maintains parameters close to factory specifications. This is particularly important for units with direct gasoline injection, where stable turbocharger operating conditions translate into engine refinement and repeatable performance.

Application in the 2.0 TFSI BGB gasoline engine

The 2.0 TFSI BGB gasoline engine uses a high-efficiency turbocharger that requires a constant, controlled oil supply. The appropriate oil line:

• supports the maintenance of proper oil pressure within the turbine,
• reduces the risk of local overheating in the bearing zone,
• helps maintain uniform lubrication under variable engine loads.

Selecting a line from the Oil coolers and lines group matched to this power unit is an important element when replacing the turbocharger, regenerating the turbo system, or repairing leaks in the oil circuit.

Practical installation and maintenance tips

When replacing the turbocharger oil line, it is worth paying attention to the cleanliness of the lubrication system and the condition of the connections in the engine block and turbine housing. It is recommended to:

• check for leaks after installation with the engine warmed up,
• ensure the line is not under tension or twisted after tightening the fittings,
• regularly change the engine oil according to the vehicle manufacturer's recommendations.

Such an approach reduces the risk of recurring leaks and supports longer, stable operation of the turbocharger in daily use.

Expansion of the oil lubrication and cooling system

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 oil lines, connections, or components working with the oil cooler, check the available parts in the Audi oil coolers and lines category.

To better understand how the condition of the cooling system and oil circuit affects the durability of the power unit, it is worth reading our guide: Summer heat vs. cooling system: used radiators and fans as a guarantee of savings. You will find practical tips there on how to take care of components responsible for the engine's operating temperature.