Audi A5 8T 3.0 TDI CCWA Diesel Oil Breather Separator 059103495G

Audi A5 8T 3.0 TDI CCWA Diesel Oil Breather Separator is a crankcase ventilation system component, designed specifically for the 3.0 TDI CCWA diesel engines in the Audi A5 8T. It is responsible for the effective separation of oil mist from gases, which promotes cleaner engine operation and stable performance parameters. Thanks to the use of the original Audi design, the separator maintains the correct flow characteristics for the diesel engine.

Specifications and technical data

• SKU: 059103495G
• Mark: Audi
• Condition: Used
• OEM Part Number: 059103495G
• Substitutable numbers: 059103495G, 059 103 495 G
• Fuel type: Diesel
• Category: Other Engine Parts

Function and role of the oil separator in the 3.0 TDI engine

In the 3.0 TDI CCWA diesel engine, the oil separator plays a key role in the crankcase ventilation system. Its task is:

• mechanical and aerodynamic separation of oil particles from gases before they return to the intake,
• limiting carbon deposit buildup in the manifold and intake components,
• maintaining stable pressure in the crankcase, which promotes smooth operation of the power unit,
• reducing oil consumption resulting from the suction of oil mist into the intake system.

A functional oil separator in a diesel engine translates into more predictable operating conditions, which is especially important during long-term operation and higher mileages.

Construction and fitment for the Audi A5 8T 3.0 TDI CCWA

The separator has been constructed with the specific gas flow parameters of the 3.0 TDI CCWA unit in mind. This means:

• internal geometry matched to the characteristics of the diesel engine,
• adaptation to work in typical temperature and pressure ranges for a diesel,
• compatibility with the factory mounting system and hoses in the Audi A5 8T.

As a result, installation is straightforward, and the component maintains the factory logic of the ventilation system after replacement.

Benefits of using an original separator in a diesel engine

Using a dedicated oil separator in the Audi A5 8T 3.0 TDI CCWA allows for the mitigation of typical operational problems of diesel units. The most important advantages include:

• more stable operation of the intake system thanks to the reduction of oil in the airflow,
• lower risk of accelerated fouling of the manifold and flow control elements,
• maintenance of predictable combustion parameters, which promotes the refinement of the diesel engine,
• easier diagnostics – the ventilation system retains its factory characteristics.

In the case of diesel units, where thermal and pressure loads are higher than in gasoline engines, a functional oil separator has a direct impact on the long-term condition of the power unit.

Characteristics of the used component

The presented oil separator is a used part, sourced from disassembly. This type of part allows for an economical repair of the ventilation system while maintaining the original Audi design. In practice, this means the ability to restore the correct operation of the system without the need to use replacements with unknown characteristics.

Related components and further Audi topics

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 breather hoses, ventilation system housings, or additional modules related to the operation of the power unit, check the available parts in the Other Audi category.

For a better understanding of the differences in the construction of Audi power units, including solutions used in more powerful variants, it is worth reading the article Audi RS vs other models – what is hidden under the hood and chassis?, which discusses, among other things, the specifics of engines, brakes, and chassis in the sporty RS versions.

If you are interested in a broader context of using original, including used, components in maintaining the brand's character, the material Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?, describing the impact of factory components on preserving the driving properties and quality of Audi cars, may be helpful.