Oil Separator Audi RS3 8V TTRS 8S 2.5 TFSI DAZA Breather Valve 07K103495B

Oil Separator Audi RS3 8V TTRS 8S 2.5 TFSI DAZA Breather Valve is an original crankcase ventilation system component, designed specifically for the high-performance 2.5 TFSI DAZA engines. Thanks to its factory design, it ensures stable separation of oil vapors from engine gases, which promotes clean intake system operation and consistent performance. This solution is intended for users who expect predictable operation and compliance with Audi's factory specifications.

Specifications and technical data

• SKU: 07K103495B
• Mark: Audi
• Condition: Used
• OEM Part Number: 07K103495B
• Substitutable numbers: 07K103495B, 07K 103 495 B
• Category: Engine Oil Coolers & Lines

Purpose and function in the 2.5 TFSI DAZA engine

The oil separator breather valve in RS3 8V and TTRS 8S models is responsible for the controlled discharge of crankcase gases and limiting the ingress of oil mist into the intake system. In a turbocharged engine, such as the 2.5 TFSI DAZA, a properly functioning separator:

• stabilizes crankcase pressure under high load,
• reduces the amount of oil reaching the intake and intercooler,
• limits the risk of excessive carbon deposit buildup on intake valves,
• supports smooth engine operation during dynamic track and road driving.

A properly selected breather system component is particularly important in highly stressed engines, where stability of operating parameters has a direct impact on durability and performance consistency.

Benefits of using an original Audi separator

For advanced units such as the 2.5 TFSI DAZA, using an original Audi oil separator translates into a number of practical benefits:

• factory geometry of channels and separation chambers, matched to the flow characteristics of the 2.5 TFSI engine,
• maintaining compliance with the stock engine control unit calibration,
• reducing the risk of diagnostic errors related to improper breather system operation,
• easier diagnostics and service based on manufacturer documentation.

For users who drive their RS3 or TTRS dynamically, replacing a worn separator with a functional OEM part helps maintain predictable lubrication system behavior and reduces the risk of issues with excessive oil consumption.

Condition, verification, and practical application

The offered separator comes from the Oil coolers and lines group, which emphasizes its connection to the lubrication and oil management area of the engine. The item is used, which in practice means it is a cost-effective solution for conscious users looking for a factory component at a reasonable price, while maintaining the original Audi design.

Replacing the oil separator breather valve is particularly recommended when symptoms such as increased oil consumption, unstable idle, or excessive oiling of intake hoses appear. Using an original component allows you to restore the proper operation of the ventilation system without the need for ECU map interference or additional modifications.

Integration with the lubrication and oil cooling system

In 2.5 TFSI DAZA engines, the breather system works in conjunction with the oil circuit and components responsible for its cooling. A functional separator supports:

• maintaining proper oil quality by limiting foaming and overheating,
• stable turbocharger operating conditions due to controlled oil return,
• even lubrication at high RPMs and prolonged load.

For users who intensively utilize the potential of the 2.5 TFSI unit, maintaining components related to oil vapor discharge is one of the key aspects of maintaining a safe operating temperature for the lubrication system.

Technical support and additional materials

During the summer period, monitoring the engine's operating temperature and components related to oil and its cooling becomes particularly important. To better understand the impact of high temperatures on the cooling system and related components, it is worth reading the guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings, which discusses practical aspects of operation in difficult thermal conditions.

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, oil cooling modules, or additional lubrication system components, check the available parts in the Audi oil coolers and lines category.