Verus Engineering Air Oil Separator AOS KitThe Verus Engineering Air Oil Separator (AOS) ensures the intake system remains oil free. Oil in the intake system reduces octane, which can lead to detonation, reduction in power, and carbon build up. This is great for the FA24 engine found in the Subaru WRX. Four, 5 micron, coalescent filters, one on each inlet and outlet, baffling, and stainless mesh offer unprecedented air filtration for the crankcase air. Further improving filtration is internal
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