Crankcase Housing Breather Line. Porsche 958 Cayenne / 970 Panamera 4.8L 2010-17  ❭  94810724520

Crankcase Housing Breather Line.

The Crankcase Housing Breather Line is a OE MATCH engine ventilation component designed to regulate internal crankcase pressure and route blow-by gases safely back into the intake system. As part of the Positive Crankcase Ventilation (PCV) system, this hose ensures balanced airflow and proper pressure control within the engine.

Fits:

• Porsche 958 Cayenne S V8 4.8L Petrol (400Hp) 2010-17
• Porsche 970.1 Panamera S V8 4.8L 2009-13
• Porsche 970.1 Panamera 4S V8 4.8L 2009-13
• Porsche 970.1 Panamera GTS V8 4.8L 2011-13
• Porsche 970.2 Panamera GTS V8 4.8L 4WD (440Hp) 2014-16 

 
Diagram Ref No 5

What This Product Does:

• Relieving excess crankcase pressure caused by combustion blow-by gases
• Routing gases back into the intake system for controlled reburning
• Supporting proper PCV system function
• Reducing oil vapour contamination
• Helping prevent sludge build-up and gasket failure

Symptoms Of Wear Or Failure:

• Rough or unstable idle
• Check Engine Light illumination
• Oil leaks from seals or gaskets
• Increased oil consumption
• Whistling or hissing noises (vacuum leak)
• Excessive exhaust smoke
• Oil residue around breather connections

Why Replacement Matters:

• Restore proper crankcase pressure regulation
• Prevent oil leaks and vacuum-related issues
• Improve engine performance and efficiency
• Protect intake components from oil contamination
• Avoid costly engine repairs

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94810724520

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