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keeping the head gasket properly sealed under the most demanding conditions
particularly under sustained high cornering loads
Includes rear dust boots and rear bump stops
Works with EJ25 single AVCS intake cams
The built-in heater keeps water from condensing in the AOS
IAG Performance V4 Air Oil Separator AOS - Neon Yellow - 2022-2026 Subaru WRX PDM_sweatshirts keeping the head gasket properlyIAG V4 Air Oil Separator AOS Neon Yellow 2022 2026 Subaru WRX Keep Oil Out of Your Intake The IAG V4 Air Oil Separator (AOS) brings proven crankcase protection to the 2022 2026 Subaru WRX. Developed after years of thorough testing on standard and competitive applications, the IAG AOS uses a 1 liter cast aluminum swirl pot canister to dramatically improve oil separation from the PCV system before delivering PCV gases to the intake. The aluminum housing
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