Porsche Cayenne 9PA Crankcase Breather Hose Pipe Line 4.5 Petrol 94811007003

Porsche Cayenne 9PA Crankcase Breather Hose Pipe Line 4.5 Petrol is a component from the Lines, hoses and pipes group, designed for the petrol engine ventilation system. It is responsible for the stable discharge of gases from the crankcase, which supports smooth engine operation and reduces the risk of unwanted leaks and disturbances in the intake system.

Specifications and technical data

• SKU: 94811007003
• Mark: Porsche
• Condition: Used
• OEM Part Number: 94811007003
• Substitutable numbers: 94811007003, 948 110 070 03
• Fuel type: Petrol
• Part type: Hose
• Category: Hoses, Lines & Pipes

Purpose and technical function

The crankcase breather hose in the Porsche Cayenne 9PA model with a 4.5 petrol engine operates in a demanding thermal and pressure environment. Its task is to provide controlled discharge of oil vapors and gases from the crankcase to the intake system, which helps to maintain:

• stable pressure in the crankcase,
• cleaner operation of the intake system,
• more predictable combustion parameters in the petrol engine. A properly selected hose in this area reduces the risk of blow-by, "false air" intake, and problems with idling.

Benefits of using an original Porsche component

The original breather hose dedicated to the Porsche Cayenne 9PA ensures proper fitment to the connectors and routing in the engine bay. Thanks to this:

• connections are airtight and resistant to engine vibrations,
• the hose maintains appropriate flexibility within the typical operating temperature ranges of a petrol engine,
• the risk of cracks and leaks at critical points of the ventilation system is reduced. Using a component from the Lines, hoses and pipes group dedicated to a specific model facilitates installation and allows for maintaining the factory logic of hose routing in the engine bay.

Characteristics of the used component

The offered hose is a used component, which in practice means the possibility of an economical replacement of a worn or damaged hose while maintaining the manufacturer's original specifications. This solution is particularly beneficial when servicing older Porsche Cayenne 9PA units, where both technical compatibility and reasonable repair costs are important. Before installation, a standard inspection of the hose condition is recommended, including an assessment of material flexibility, potential micro-cracks, and the quality of the connection ports, so that the crankcase ventilation system can operate in a predictable and repeatable manner.

Significance for petrol engine operation

In a petrol engine, a properly functioning crankcase ventilation system affects the engine's refinement, emission levels, and the cleanliness of the intake system. A functional breather hose helps to:

• limit contamination of the intake manifold with oil vapors,
• maintain stable vacuum values in the system,
• reduce the risk of unstable idle speed. For users of the Porsche Cayenne 9PA with a 4.5 petrol unit, replacing a worn hose with the correct component is a simple step that can realistically improve the predictability of engine operation in daily use.

System expansion – related components

If you are planning a comprehensive repair or upgrade of the engine area in your Porsche and need other components from the same group, such as vacuum lines, cooling system hoses, or supply pipes, check the available parts in the Porsche Lines, hoses and pipes category. If you are also interested in improving driving feel and interior quality through the use of aftermarket components, it is worth checking out the guide on selecting cabin equipment elements – you will find it in the article Premium interior for half the price: second-hand seats, steering wheels, and multimedia.