Moroso Air/Oil Separator (Chrysler 5.7/6.1)

The air/oil separator is plumbed into a vehicle's PCV system to capture the excess crankcase vapors and the residual oil mist from reentering the intake track. Vehicles from the factory vent these excess crankcase vapors and residual oil right back into the intake manifold which could cause detonation and oil deposits to form in the intake track including the valves themselves.