85655 MOROSO Twin Small Body Black PCV Air-Oil Separator Kit Fitment 2004-2007 Subaru WRX 2.5L EJ255, STI 2.5L EJ257
Moroso Air-Oil Separator is plumbed into a vehicle's PCV system and captures the excess crankcase vapors and the residual oil mist from reentering the intake tract. 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 tract, including the valves themselves. Ethanol enriched fuels put off more moisture during the combustion process - the Moroso Air-Oil Separator is an excellent tool for collecting this extra moisture. Check out more Moroso products at Horsepower Direct®. If there is something that your looking for and can't find it, just e-mail or call us at 855-HPD-RACE where you not only get the best price but get it shipped Direct To Your Door®!