Audi RS3 8V TTRS 8S Oil Separator Breather 2.5 TFSI DAZA Petrol 07K103495A

Audi RS3 8V TTRS 8S Oil Separator Breather 2.5 TFSI DAZA is a specialized crankcase ventilation system component designed for 2.5 TFSI DAZA series petrol engines. It is responsible for effectively separating oil mist from gases before they return to the intake, which promotes stable engine operation and reduces contamination of the intake system. This solution is dedicated to high-performance Audi RS3 8V and Audi TTRS 8S models, where precise breather control is essential for engine durability.

Specifications and technical data

• SKU: 07K103495A
• Mark: Audi
• Condition: Used
• OEM Part Number: 07K103495A
• Substitutable numbers: 07K103495A, 07K 103 495 A
• Fuel type: Petrol
• Category: Other Engine Parts

Function of the oil separator in the 2.5 TFSI DAZA engine

The oil separator breather in the 2.5 TFSI DAZA engine is responsible for the controlled discharge of gases from the crankcase while limiting the ingress of oil into the intake system. In high-power units such as the RS3 and TTRS, a properly functioning breather system helps maintain:

• stable crankcase pressure under high engine load,
• a cleaner intake and reduced deposit buildup,
• more consistent performance parameters during dynamic driving.

As a result, the separator supports the smooth operation of the petrol engine, which is particularly important in vehicles used both daily and in sporting conditions.

Compatibility with Audi RS3 8V and TTRS 8S models

The presented component has been developed for the 2.5 TFSI DAZA engine used in Audi RS3 8V and Audi TTRS 8S models. The design of the separator is adapted to the characteristics of these units – high boost, high gas flow, and the specific architecture of the cylinder head and valve cover. Using the correct separator in the breather system allows for the preservation of factory control logic and operating parameters, which is significant both for stock operation and after software modifications.

Benefits of using an original breather separator

In turbocharged petrol engines such as the 2.5 TFSI DAZA, a properly selected oil separator affects several key areas:

• limiting oil blow-by into the intake, which promotes the cleanliness of the intercooler and manifold,
• more predictable combustion conditions under high load,
• reduced risk of unstable idle operation associated with uncontrolled oil suction.

For Audi RS3 and TTRS users, this means more consistent performance and easier diagnostics of potential breather system issues. Choosing a dedicated separator is particularly important during intensive track use or frequent use of the full rev range.

Product characteristics and practical application

The oil separator in question is a component intended for a petrol engine, which is important when selecting parts in the context of differences between petrol and diesel units. In the case of the 2.5 TFSI DAZA, a properly functioning oil breather helps limit phenomena such as excessive oil consumption or unstable pressure in the lubrication system during sudden load changes.

The product is used both for standard replacement of worn breather system components and for comprehensive engine maintenance, e.g., during cylinder head repairs, seal replacements, or intake system inspections. Proper selection of the separator is one of the elements that support long-term, consistent operation of the engine in RS series cars.

Condition and selection of parts for a specific vehicle

The oil separator breather is offered as a used part, which allows for an economical replacement of the component while maintaining compliance with the factory system design. Before installation, it is recommended to verify compatibility with the specific version of the 2.5 TFSI DAZA engine and to check other components of the crankcase ventilation system, such as hoses, connectors, or control valves.

To facilitate identification in catalog systems, the product has assigned markings, including the OEM part number and interchangeable numbers, which are presented in the technical specifications section. This allows you to precisely match the component to a given Audi RS3 8V or TTRS 8S, minimizing the risk of ordering errors.

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other components from the same group, such as breather hoses, ventilation valves, or additional ventilation system parts, check the available parts in the Other Audi category.

To better understand the specifics of RS series power units and the differences between them and standard versions, it is worth reading the article describing the construction of engines, brakes, and chassis – details can be found in the material Audi RS vs other models – what is hidden under the hood and chassis?.