Audi RS Q3 8U RS3 8V Turbocharger Oil Pipe Line 2.5 TFSI Petrol 07K145778E

Audi RS3 8V / 8Y 2.5 TFSI Turbo Oil Feed Line is a component from the Oil Coolers & Lines group, designed for precise oil delivery to the turbocharger in the 2.5 TFSI engine. A properly selected oil line stabilizes rotor lubrication and cooling, which translates to safe turbo operation under high load conditions.

Specifications and technical data

• SKU: 07K145778E
• Mark: Audi
• Condition: Used
• OEM Part Number: 07K145778F
• Substitutable numbers: 07K145778F, 07K 145 778 F
• Category: Engine Oil Coolers & Lines

Purpose and Function in the Turbocharger Lubrication System

The turbocharger oil line for the Audi RS3 8V / 8Y 2.5 TFSI is responsible for the controlled supply of engine oil to the turbocharger core. Stable oil flow:

• limits the risk of turbocharger bearing overheating,
• reduces friction in rotating components,
• supports the maintenance of consistent boost parameters,
• indirectly affects the lifespan of the 2.5 TFSI engine during dynamic driving. For high-power engines, such as the 2.5 TFSI in the RS3, a functional turbo oil feed line is crucial for maintaining repeatable performance and reducing the risk of costly failures.

Construction, Fitment, and Installation in the Audi RS3

This component was developed by Audi as part of the turbocharger lubrication system, maintaining factory geometry and mounting points. Thanks to this, the line:

• ensures proper oil routing relative to the turbocharger housing and engine block,
• maintains the correct bend radius, minimizing stress during engine operation,
• is ready for installation in place of the factory line without requiring modifications. This precise fitment facilitates quick servicing of the boost system and reduces the risk of leaks resulting from improper line routing.

Characteristics of a Used Component

The offered turbo oil feed line is a used part, sourced from disassembly. This type of component, when in good technical condition, allows for economical repair of the boost system without compromising the original Audi design. In practice, this means the possibility of restoring proper turbocharger lubrication at a lower cost than purchasing a new part.

Significance for Turbocharger and Oil Cooling System Durability

A functional turbocharger oil line works in conjunction with other components from the Oil Coolers & Lines group, stabilizing oil temperature and pressure in the turbocharger area. Replacing a worn or leaking line with a functional component reduces the risk of:

• oil pressure drops in the system,
• local overheating in the turbocharger core,
• accelerated wear of bearings and seals. For a vehicle driven dynamically, especially in high ambient temperature conditions, this is an important step towards maintaining stable engine operation.

Technical Support and Knowledge of the Cooling System

To better understand how ambient temperature affects the engine's cooling and lubrication system, we recommend reading our guide: Summer Heat vs. Cooling System: Used Coolers and Fans for Savings. You will find practical tips on how to care for components responsible for heat dissipation and protecting the engine from overheating. If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other parts from the same group, such as oil lines, oil return lines, or additional feed sections, check the available parts in the Audi Oil Coolers & Lines category.