Genuine Porsche 99610702304 Air Oil Separator AOS

The Genuine Porsche 99610702304 Air-Oil Separator (AOS) is a critical emissions control component designed for Porsche Boxster models. Located on the top right rear corner of the engine, this OEM separator ensures optimal crankcase pressure management and reduces harmful emissions.

Function and Operation:

The separator is responsible for collecting residual gases and vapors contained inside the crankcase and funneling them back into the intake manifold where they can be burned in the combustion chamber. The AOS is basically a small diaphragm distillery which distills the minute amounts of oil mist in the crankcase, liquifies it and sends it back to the crankcase. The "clean" air is now sent into the air intake (after the throttle body) to be burned off by the engine.

Signs of Failure:

• When the separator fails, you will begin to see a large increase in the overall vacuum in the engine crankcase.
• In the most extreme cases, the air-oil separator fails to separate the oil from the air, and oil is then sucked into the intake manifold. The oil is then burned up in the combustion process, producing grey/blue smoke in the exhaust.
• Excessive crankcase vacuum and oil consumption

OEM Quality:

This is an authentic Genuine Porsche replacement part, ensuring perfect fit and optimal performance for your vehicle's engine ventilation system. Replacing a failed AOS restores proper crankcase ventilation, eliminates oil consumption issues, and reduces emissions.

Cross-Reference Numbers: 996-107-023-04, 996.107.023.04, 996 107 023 04