Verus Engineering AOS Kit - 2015-2021 Subaru WRX

Ultimately it is designed to perform the crucial task of eliminating oil from the engine's crankcase system. This is to ensure that the oil does not infiltrate the intake system, causing a decrease in octane, which can lead to a series of problems, including carbon build-up, power reduction, and internal engine damage. With the aid of coalescent filters, oil vapor with a size as small as 5 microns can be effectively filtered out. Verus Engineering AOS Kit SPECS: CNC Machined from 6061-T6 Mil-Spec O-Ring Bosses Anodized for Corrosion Resistance CNC Laser Engraved Four 5 Micron Coalescent Filters Made in the U.S.A. FEATURES: Prevents Oil from Getting in the Intake System 4 Coalescent Filters that Filter Particulates Larger than 5 Microns Stainless Mesh to Further Condense Oil Vaper Baffles for Further Separation of Oil Particles INCLUDES: Assembled AOS 4 Coalescent Filters Internal Baffling Stainless Mesh Sheet Steel B