Volkswagen Touareg 7L Audi Q7 4L Oil Separator Breather 3.0 TDI 057103495L

Volkswagen Touareg 7L Audi Q7 4L Oil Separator Breather 3.0 TDI is an original component from the Oil pumps and parts group, designed for the crankcase ventilation system in 3.0 TDI diesel engines. It ensures stable separation of oil vapors from gases before they return to the intake, which promotes cleaner engine operation and reduces contamination of the intake system.

Specifications and technical data

• SKU: 057103495N
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 057103495N
• Substitutable numbers: 057103495N, 057 103 495 N, 057103495L, 057 103 495 L
• Category: Oil Pumps & Parts

Purpose and technical function

The presented breather – oil separator is dedicated to Volkswagen vehicles and structurally related Audi models with the 3.0 TDI engine. This component is responsible for the controlled discharge of gases from the crankcase and their reintroduction into the intake system after prior separation of oil particles. This limits excessive oiling of intake hoses, the manifold, and turbocharging components, which promotes stable engine performance parameters.

A functional oil separator helps maintain proper pressure in the crankcase, which is important for the tightness of seals, smooth engine operation, and long-term efficiency of the lubrication system. In the case of 3.0 TDI engines, where thermal and pressure loads are relatively high, a properly functioning breather is an essential element of maintenance.

Benefits of using an original breather

Using an original oil separator from the Oil pumps and parts group allows you to maintain factory flow and vapor separation parameters. A design tailored to the specific 3.0 TDI system minimizes the risk of incorrect installation, leaks, or unwanted changes in ventilation characteristics. This is particularly important in SUV-class vehicles, such as the Touareg and Q7, which often operate under higher loads and in varied operating conditions.

A properly selected breather can contribute to:

• reducing the amount of oil entering the intake system,
• more stable operation of the turbocharger and mass air flow sensor,
• limiting carbon deposit buildup in the intake manifold,
• maintaining uniform pressure in the crankcase.

Product characteristics and condition

The offered item is a used part, sourced from dismantling, which represents a reasonable compromise between cost and maintaining the manufacturer's original specifications. Choosing a used OEM component is often preferred for technically advanced systems where maintaining structural compatibility with the factory design is essential. This type of solution allows for optimizing repair costs while maintaining high quality of workmanship.

The breather – oil separator is a component mounted within the engine lubrication and ventilation system, therefore, when replacing it, it is recommended to simultaneously check vacuum hoses, connectors, and connections to the oil filter housing or valve cover, depending on the specific configuration of the 3.0 TDI unit.

Installation and operational recommendations

Before installation, it is worth verifying the condition of the seals working with the breather and cleaning contact surfaces from oil deposits. Proper seating of the component and maintaining the correct tightening torque for fasteners is important for the tightness of the entire system. After replacement, it is recommended to observe any potential leaks and check the oil level during the first few operating cycles.

In four-wheel-drive vehicles, such as the Touareg and Q7, maintaining the lubrication and ventilation system in good condition is particularly important due to frequent long-term loads and operation across a wide range of engine speeds. A well-chosen oil separator supports engine stability, which translates into predictable behavior of the AWD drive.

If you are planning a comprehensive repair or upgrade of the engine area in your Volkswagen and need other components from the same group, such as pump housings, oil flow control modules, or additional lubrication system elements, check the available parts in the Volkswagen Oil pumps and parts category.

Technical support and additional information

For Touareg and Q7 users with four-wheel drive, knowledge about the cooperation of the 3.0 TDI unit with AWD systems may be particularly useful. These issues, along with a discussion of typical components and service aspects, are described in more detail in the article xDrive, 4Matic, quattro or 4Motion – a comparison of AWD drives from BMW, Mercedes, Audi, and VW, which will help you better understand the relationship between engine condition and the operation of the drivetrain.