Moroso 85601 Air Oil Separator - Small Body - Black Anodized Finish

Compatible with 1990-2005 Mazda Miata (MX-5) models;

Plumbed into a vehicle's PCV system to capture the excess crankcase vapors, residual oil mist and moisture from reentering the intake tract.

Vehicles from the factory vent these excess crankcase vapors, residual oil mist and moisture right back into the intake manifold which could cause detonation, oil deposits to form in the intake tract including the valves themselves and from lowering the efficiency of the intercooler in intercooler equipped vehicles;