{"product_id":"iag-v3-street-series-air-oil-separator-aos-world-rally-blue-02-07-wrx-04-07-sti-04-08-forester","title":"IAG V3 Street Series Air \/ Oil Separator (AOS) World Rally Blue 02-07 WRX \/ 04-07 STI \/ 04-08 Forester","description":"\u003ch3\u003eIAG V3 Street Series Air \/ Oil Separator (AOS) World Rally Blue 02-07 WRX \/ 04-07 STI \/ 04-08 Forester | 1 Liter Capacity | Engine Protection Upgrade\u003c\/h3\u003e\n\n\u003ch4\u003eOverview\u003c\/h4\u003e\n\u003cp\u003eThe IAG V3 Street Series Air \/ Oil Separator (AOS) is a precision-engineered solution designed to protect the engines of Subaru WRX, WRX STI, and Forester XT models from 2002 to 2008. This AOS effectively separates oil from the PCV (positive crankcase ventilation) gases before they re-enter the intake tract, preventing oil contamination that can degrade performance and cause long-term engine damage. Ideal for enthusiasts who demand reliability and longevity from their Subaru’s turbocharged engines, the IAG AOS is a smart upgrade that requires no routine draining or maintenance.\u003c\/p\u003e\n\u003cp\u003eDeveloped through extensive testing on both street and competitive applications, the IAG AOS features a 1-liter cast aluminum swirl pot canister with a unique internal baffle system. This design maximizes oil separation efficiency while maintaining proper crankcase ventilation. The lightweight aluminum housing is finished in a durable powder coat with a distinctive World Rally Blue color exclusive to Subimods. The system integrates seamlessly with the factory PCV setup and includes custom-length SAE Quick Connection lines for a secure, leak-resistant installation.\u003c\/p\u003e\n\u003cp\u003eBy preventing oil from entering the intake system, the IAG AOS helps maintain clean intercooler and intake components, reducing the risk of detonation, pre-ignition, and power loss. This is especially important for Subaru owners who push their vehicles on the street, track, or in spirited driving conditions. The built-in heating system eliminates condensation buildup, ensuring the separated oil remains free-flowing and returns safely to the crankcase. This thoughtful engineering preserves engine health and performance, making the IAG V3 AOS a valuable addition to any Subaru enthusiast’s build.\u003c\/p\u003e\n\n\u003ch4\u003eFeatures \u0026amp; Specifications\u003c\/h4\u003e\n\u003cp\u003eThis IAG Performance Air \/ Oil Separator is engineered for 2002-2007 Subaru WRX, 2004-2007 WRX STI, and 2004-2008 Forester XT models. Featuring a 1-liter cast aluminum canister with a powder-coated finish, it delivers superior oil separation and crankcase ventilation for Subaru enthusiasts seeking enhanced engine protection and reliability.\u003c\/p\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e IAG Performance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e V3 Street Series Air \/ Oil Separator (AOS) World Rally Blue\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e IAG-ENG-7185WRB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e 2002-2007 WRX, 2004-2007 WRX STI, 2004-2008 Forester XT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Cast Aluminum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Powder Coat, World Rally Blue\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Cast Aluminum with Internal Baffle System\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Not Specified\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e Approximately 1 Liter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBreather Ports:\u003c\/strong\u003e True 360 Degree Rotating Dual Ports\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeating System:\u003c\/strong\u003e Integrated Coolant-Heat Transfer\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHose Connections:\u003c\/strong\u003e Custom Length SAE Quick Connect Lines\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaintenance:\u003c\/strong\u003e No Manual Draining Required\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility Note:\u003c\/strong\u003e Not Compatible with Most Strut Tower Bars\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eKey Benefits\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEngine Protection:\u003c\/strong\u003e Prevents oil contamination in intake and intercooler, reducing risk of detonation and engine damage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaintenance-Free:\u003c\/strong\u003e No routine draining or manual maintenance needed thanks to the large capacity and intelligent oil drainage design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eImproved Crankcase Ventilation:\u003c\/strong\u003e Maintains OEM PCV system function with enhanced vacuum and pressure control for optimal engine breathing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Lightweight cast aluminum housing with powder coat finish resists corrosion and adds a clean, factory-quality look.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondensation Prevention:\u003c\/strong\u003e Exclusive heating system uses engine coolant to eliminate sludge buildup and maintain oil flow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Custom-length SAE Quick Connect hoses reduce leak potential and simplify fitment on supported Subaru models.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1× IAG V3 Street Series Air \/ Oil Separator (AOS) World Rally Blue\u003c\/li\u003e\n  \u003cli\u003eCustom length SAE Quick Connection hoses\u003c\/li\u003e\n  \u003cli\u003eBillet aluminum coolant swivel fittings\u003c\/li\u003e\n  \u003cli\u003eAll necessary fittings for installation\u003c\/li\u003e\n  \u003cli\u003eInstallation instructions for 2002-2007 WRX, 2004-2007 WRX STI, and 2004-2008 Forester XT\u003c\/li\u003e\n  \u003cli\u003eSupplementary cruise control relocation instructions for 2002-2005 WRX\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp\u003eThe IAG V3 Street Series AOS is designed for straightforward installation using the included custom-length SAE Quick Connect hoses and fittings. While the system is bolt-on and does not require routine maintenance, professional installation is recommended to ensure proper coolant line integration and secure hose connections. No special tools beyond standard hand tools are typically needed. This AOS maintains compatibility with factory ECU settings and does not require tuning adjustments. However, it is not compatible with most aftermarket strut tower bars, so verify fitment if your vehicle has chassis modifications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProfessional Installation:\u003c\/strong\u003e Recommended\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModifications Required:\u003c\/strong\u003e None beyond standard hose routing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVerify Compatibility:\u003c\/strong\u003e Confirm fitment for your specific year and trim level before purchase\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eShop with confidence at Subimods—your Subaru parts specialists.\u003c\/p\u003e","brand":"IAG Performance","offers":[{"title":"Default Title","offer_id":47394830188719,"sku":"IAG-ENG-7185WRB","price":499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/3598\/4815\/files\/Airecolor_07443f1f-88d9-47d4-bbb6-fa34cf8a04b3.png?v=1787673981","url":"https:\/\/subimods.com\/products\/iag-v3-street-series-air-oil-separator-aos-world-rally-blue-02-07-wrx-04-07-sti-04-08-forester","provider":"Subimods.com","version":"1.0","type":"link"}