Audi A4 B8 A5 S5 8T Crankcase Breather Hose Engine Pipe Oil Separator 06E103547N

The Audi A4 B8 A5 S5 8T Crankcase Ventilation Separator Oil Separator is a component of the crankcase ventilation system designed for Audi gasoline engines, which stabilizes engine operation and limits oil entering the intake system. A properly selected oil separator supports even combustion, reduces the risk of carbon buildup, and helps maintain engine operating parameters at the correct level.

Specifications and technical data

• SKU: 06E103547N
• Mark: Audi
• Condition: Used
• OEM Part Number: 06E103547N
• Substitutable numbers: 06E103547N, 06E 103 547 N
• Fuel type: Petrol
• Category: Crankshafts

Purpose and Function in a Gasoline Engine

The crankcase ventilation / oil separator in Audi A4 B8, A5, and S5 8T models is responsible for the controlled discharge of gases from the crankcase and the separation of oil mist. In a gasoline engine, a properly functioning oil separator:

• stabilizes crankcase pressure, which promotes smooth engine operation;
• limits oil entering the intake, reducing the risk of contaminating the throttle body and manifold;
• supports cleaner mixture combustion, which can translate to more predictable throttle response;
• reduces the risk of leaks resulting from overpressure in the crankcase system.

Replacing a worn crankcase ventilation system with a functional component is particularly important for gasoline engines with higher mileage, where symptoms such as unstable idle speed or increased oil consumption may be due to a faulty separator.

Design and Fitment for Audi

The oil crankcase ventilation for Audi A4 B8, A5, and S5 8T is designed as a component that works with the factory intake system and valve cover. This means:

• maintaining the original gas flow geometry in the crankcase ventilation system;
• compatibility with factory mounting points in the engine bay, without the need for modifications;
• proper operation with gasoline engines used in this generation of Audi.

This allows for installation similar to the factory service procedure, and after replacement, the ventilation system can regain its original operating parameters.

Condition, Origin, and Benefits of Choosing a Used Part

The offered oil separator is an original Audi part from the crankshaft category, sourced from disassembly. A used component of this type is an attractive alternative to new aftermarket parts because it:

• retains the factory specifications intended by the vehicle manufacturer;
• allows for reduced repair costs while maintaining proper fitment for the specific model;
• minimizes the risk of installation problems typical of parts with uncertain geometry or manufacturing quality.

Before installation, a standard visual inspection and verification of the ventilation system's seal are recommended to fully utilize the potential of the installed component.

Why Replace the Crankcase Ventilation System in Audi A4 B8 / A5 / S5 8T

A functional oil separator in an Audi gasoline engine affects several key operational areas:

• stable idle operation due to proper gas discharge from the crankcase;
• reduced deposit buildup in the intake manifold and on intake valves;
• more predictable oil consumption, without excessive oil being drawn into the intake system;
• maintaining proper engine running smoothness across a wider range of loads and temperatures.

Replacing the crankcase ventilation system is particularly recommended for symptoms such as oil being drawn into the intake, excessive smoking, or noticeable vacuum after removing the oil filler cap.

Other Audi Crankshafts and Technical Materials

If you are looking for other Audi crankshafts compatible with specific models and engine versions, check out the offer in the Audi crankshafts category, where you will find a wide selection of this brand's engine components.

To compare tuning solutions and used components in other brands, you can read an article describing a sports exhaust system for Mini: Used Mini John Cooper Works Pro Sports Exhaust – a Legal Way to Get a Sporty Sound and +7 HP. This is a good supplement to knowledge about selecting used parts and their impact on vehicle performance characteristics.