Audi TT 8J 1.8 TFSI CDAA High Pressure Oil Feed Pipe Hose Line Tube 06J145771D

Audi TT 8J 1.8 TFSI CDAA High Pressure Oil Feed Pipe Hose Line Tube is a precision lubrication system component, belonging to the Oil coolers and lines category, designed to ensure a stable supply of operating oil to the turbocharger. Using this OEM component allows for a technically correct repair of the forced induction system, maintaining factory oil routing and proper turbine operating conditions.

Specifications and technical data

• SKU: 06J145771D
• Mark: Audi
• Condition: Used
• OEM Part Number: 06J145771D
• Substitutable numbers: 06J145771D, 06J 145 771 D
• Fuel type: Diesel
• Rim width: 8
• Category: Engine Oil Coolers & Lines

Function and role of the turbocharger oil pipe

The oil pipe in the Audi TT 8J 1.8 TFSI CDAA is responsible for the controlled flow of oil to the turbocharger bearings, which reduces friction and dissipates heat from the rotor. A correctly selected oil line minimizes the risk of under-lubrication, overheating, and turbine seizure, thereby influencing the service life of the entire forced induction system.

The element from the Oil coolers and lines group works with the engine lubrication system, stabilizing the flow of the working medium under variable load conditions. The proper geometry and internal diameter of the line are crucial for maintaining the correct oil pressure in the turbocharger, especially during dynamic driving.

Compatibility and technical fitment

The presented oil pipe is intended for use in the 1.8 TFSI CDAA unit in the Audi TT 8J, which ensures factory mounting fitment and compatibility with the original routing of lines in the engine bay. The design of the line has been developed for operation in the system, taking into account appropriate thermal and pressure parameters.

Choosing a used OEM element allows for maintaining the original oil flow characteristics without the need for system modifications. This solution is particularly beneficial for repairs where maintaining the stock configuration of the lubrication and forced induction system is important.

Benefits of using a used OEM element

Using an original turbocharger oil pipe as a used part is a compromise between cost and quality. Such a component:

• maintains compliance with the factory lubrication system specification,
• reduces the risk of leaks resulting from imprecise fitment of aftermarket replacements,
• allows for economical repair while maintaining correct turbine operating parameters.

For workshops and individual users, this means stable turbocharger operation and a lower risk of secondary damage resulting from improper oil supply.

Cooling, lubrication, and operation

The oil pipe contributes to the oil circuit responsible for both lubrication and partial cooling of the rotating elements in the turbocharger. In combination with other lines and heat exchangers from the Oil coolers and lines group, it ensures stable operating conditions across a wide temperature range. Regular inspection of the condition of oil lines reduces the risk of pressure drops, leaks, and component overheating.

If you want to better understand the relationship between engine operating temperature, the cooling system, and lubrication, it is worth checking out our guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings, where we discuss the impact of high temperatures on component durability.

Expanding the lubrication system in an Audi

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, connectors, or additional installation sections, check out the available parts in the Audi oil coolers and lines category.