Genuine Porsche 0PB-115-099-A Air Oil Separator Crankcase Vent Valve

The Genuine Porsche 0PB-115-099-A is a factory-original air-oil separator (AOS) designed specifically for Porsche 9A1 flat-6 engines found in Boxster, Cayman, and 718 models from 2009-2024. This critical component serves as part of the positive crankcase ventilation (PCV) system, separating oil mist from crankcase blow-by gases before they re-enter the intake system.

Key Features:

• Removes oil droplets and vapor from crankcase gases to prevent intake contamination
• Maintains proper crankcase vacuum and pressure balance for optimal engine breathing
• Reduces excessive oil consumption and prevents carbon buildup on intake components
• Helps prevent fouled sensors, smoky exhaust, and rough idling
• Includes O-ring seals for proper installation
• Factory-correct design ensures emissions compliance and reliable performance

This air-oil separator is essential for maintaining clean crankcase ventilation and protecting your engine's intake tract from oil contamination. Over time, the AOS can become clogged or degraded, leading to increased oil consumption, intake system contamination, and potential engine damage. Regular replacement during preventive maintenance helps ensure optimal engine performance and longevity.

Replaces: 9A1-107-042-01, 9A1-107-042-02

Installation Note: It is recommended to inspect and replace associated vent hoses and seals during AOS replacement, as these components often become brittle and can crack over time, causing vacuum leaks.