Crankcase breather hose. Porsche 987.2 Boxster / Cayman 2009-12

Crankcase breather hose.
A factory-original crankcase vent hose that forms part of the engine’s PCV / AOS ventilation network, ensuring vapour is properly directed for oil separation and recirculation.

Fits:
Porsche 987.2 Boxster 2009 - 2012
Porsche 987.2 Cayman 2009 - 2012

Diagram ref no 4

This breather hose:
•   Provides a sealed, correct-diameter path for crankcase gases
•   Prevents oil vapour from escaping into the engine bay
•   Works with the AOS to keep oil mist out of the intake tract
•   Helps maintain stable crankcase vacuum and correct internal pressure
•   Protects the engine from oil contamination, excessive oil consumption, and carbon build-up

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9A110752002

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