Audi A4 S4 B8 A5 8T Turbocharger Oil Return Pressure Line 2.0 TDI 03L145736AA

Audi A4 S4 B8 A5 8T Turbocharger Oil Line 2.0 TDI is a component from the Turbochargers and Parts group, designed for the boost system in Audi diesel engines. It is responsible for the stable supply of oil to the turbocharger, which is crucial for its durability and trouble-free operation. By maintaining the original geometry of the line, it ensures proper oil flow under the demanding conditions of the 2.0 TDI engine.

Specifications and technical data

• SKU: 03L145736AA
• Mark: Audi
• Condition: Used
• OEM Part Number: 03L145736AA
• Substitutable numbers: 03L145736AA, 03L 145 736 AA
• Category: Turbos & Parts

Function and Application of the Turbocharger Oil Line

The turbocharger oil line in a 2.0 TDI engine is responsible for delivering oil at the correct pressure to the turbine bearings. A properly selected component:

• ensures stable lubrication of the turbocharger's rotor and bearings,
• reduces the risk of the component overheating,
• minimizes the possibility of leaks in the lubrication system,
• supports the maintenance of proper engine operation.

The correct oil line is particularly important in turbocharged engines, where thermal and mechanical loads are significantly higher than in naturally aspirated units.

Compatibility with Audi A4 / S4 B8 and A5 8T Models

The offered oil line has been designed for use in popular Audi mid-size models, such as the A4 and S4 generation B8 and the A5 series 8T with the 2.0 TDI engine. This ensures:

• compliance with the factory routing of lines in the engine bay,
• correct length and shape adapted to the turbocharger and engine block,
• appropriate positioning of connections relative to other auxiliary components.

Such a fit facilitates installation and reduces the need for additional modifications to the lubrication system.

Component Characteristics and Application Benefits

The turbocharger oil line offered here comes from the group of parts intended for Audi's boost system, allowing for consistency with original design solutions. In practice, this means:

• maintaining oil flow parameters in line with manufacturer specifications,
• appropriate resistance to temperature and pressure in the lubrication system,
• possibility of use as a replacement part during turbocharger repair or refurbishment.

For workshops and users, this translates to predictable boost system behavior after replacing the line and reduced risk of premature turbine wear due to improper lubrication.

Product Condition and Application in Service Practice

The offered turbocharger oil line is a part from the aftermarket, allowing for economical repair of the boost system while maintaining proper operating parameters. This type of part is suitable for both standard replacement of a worn line and comprehensive servicing of the turbocharger in a 2.0 TDI engine.

In service practice, this type of line is replaced, among other things, during:

• turbocharger refurbishment or replacement,
• detection of leaks in the turbine lubrication system,
• preventive maintenance of an engine with higher mileage.

Expanding the Boost System in Audi

If you are planning a comprehensive repair or modernization of the engine area in your Audi and need other parts from the same group, such as oil lines, supply fittings, or turbine mounting components, check the available parts in the Audi Turbochargers and Parts category.

Service Knowledge and Cost Optimization

When planning repairs to the boost and lubrication systems, it is also worth considering a part selection strategy in terms of operational economics. Materials on optimizing service costs can be helpful, such as an article on how economical vehicle operation using OEM parts affects the budget for mechanical and body repairs – more information can be found in the text Economical Ford Operation – Where to Find the Biggest Savings in Mechanical and Body Repairs.