Audi S5 8T Crankcase Breather Valve Oil Separator 079103464F

Audi S5 8T Crankcase Breather Valve Oil Separator is a component of the crankcase ventilation system, designed for the stable operation of the engine unit in Audi A5 and S5 8T generation models. Thanks to its precise construction, the separator effectively separates oil vapors from gases, which promotes cleaner engine operation and reduces intake contamination. This solution is particularly important during intensive use, where predictability and component durability are essential.

Specifications and technical data

• SKU: 079103464F
• Mark: Audi
• Condition: Used
• OEM Part Number: 079103464F
• Substitutable numbers: 079103464F, 079 103 464 F
• Rim width: 8
• Category: Crankshafts

Purpose and technical function

The Audi S5 8T Crankcase Breather Valve Oil Separator is responsible for the controlled discharge of gases from the crankcase and the separation of oil particles from the vapors. A properly functioning component of this type:

• stabilizes pressure in the crankcase,
• limits the ingress of oil into the intake system,
• supports smooth, predictable engine operation across the full load range.

In practice, this translates into more repeatable engine performance parameters and a lower risk of contamination of the intake ducts and cooperating components.

Construction and fitment for Audi

The separator has been developed as a part dedicated to the Audi engine system, which ensures proper geometric fit and compatibility with factory mounts. Original Audi brand origin means maintaining the vehicle manufacturer's quality standards, including appropriate gas flow characteristics and resistance to operating temperatures.

The element is assigned to the technical category Crankshafts, which emphasizes its close connection to the crankcase area and the crank-piston system. Such classification facilitates the selection of parts within a single engine service area.

Performance characteristics and service application

The presented oil separator is a used part, which allows for an economical replacement of the component while maintaining compliance with factory specifications. It works well both for standard service maintenance and for repairs related to excessive oil consumption or unstable engine operation resulting from improper ventilation.

Replacing the crankcase breather valve – oil separator is recommended, among other things, when symptoms such as increased exhaust smoke, oil in the intake hoses, or unstable idle speed appear. Using a component dedicated to the Audi S5 8T allows for restoring the correct operating parameters of the ventilation system.

Additional parameters and assembly aspects

The product data also includes the rim width parameter, which may be relevant when completing vehicle configurations based on specific factory specifications. This information is sometimes used in catalog systems to precisely match parts according to equipment versions.

Due to its original origin from the Audi group, the separator is intended for installation in the factory location, maintaining the existing system geometry. This facilitates service work and minimizes the risk of compatibility issues during subsequent operation.

Complementary elements and further knowledge

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 crankshaft system elements, seals, or components cooperating with the ventilation system, check the available parts in the Audi Crankshafts category.

If you are interested in a broader context of engine unit operation, including the influence of the exhaust system on engine characteristics and the selection of used components for premium brand vehicles, it is worth reading the guide material: Performance exhaust system: used manifolds and sports catalytic converters on the road.

Summary

Audi S5 8T Crankcase Breather Valve Oil Separator is a functional engine system component that supports proper crankcase ventilation and limits oil ingress into the intake. Using an original Audi brand component in the Crankshafts category allows for maintaining consistency with the factory engine design and represents a rational choice for service or repair in this area of the vehicle.