![IAG Performance Air/Oil Separator (AOS) fits Subaru Impreza WRX 08-14, STi 08-21 (Black) IAG-ENG-7181BK IAG Performance Air/Oil Separator (AOS) fits Subaru Impreza WRX 08-14, STi 08-21 (Black) IAG-ENG-7181BK](https://m.media-amazon.com/images/S/aplus-media-library-service-media/56648b9b-4aa9-4bc0-84a2-2ff17d2d9fe6.__CR0,0,166,182_PT0_SX166_V1___.png)
IAG Performance Air/Oil Separator (AOS) fits Subaru Impreza WRX 08-14, STi 08-21 (Black) IAG-ENG-7181BK
![IAG SS AOS for 04-07 STI. Keeping your oil where it belongs, in the engine crankcase and not the intake tract! — Blingstrom IAG SS AOS for 04-07 STI. Keeping your oil where it belongs, in the engine crankcase and not the intake tract! — Blingstrom](https://images.squarespace-cdn.com/content/v1/5c09dffc7e3c3a8f75affd34/1555290045898-82J8K7DKMU6D83SUE98L/IMG_20180817_102416.jpg?format=1500w)
IAG SS AOS for 04-07 STI. Keeping your oil where it belongs, in the engine crankcase and not the intake tract! — Blingstrom
![iag -performance-subaru-street-series-air-oil-separator-aos-black-wrx-2015-2018- iag-eng-7152bk — JNA Performance iag -performance-subaru-street-series-air-oil-separator-aos-black-wrx-2015-2018- iag-eng-7152bk — JNA Performance](https://cdn.shopify.com/s/files/1/0009/6541/0852/products/IAG-ENG-7182-4__42625.1600374345_1280x850.jpg?v=1611174964)
iag -performance-subaru-street-series-air-oil-separator-aos-black-wrx-2015-2018- iag-eng-7152bk — JNA Performance
![IAG PERFORMANCE COMPETITION SERIES AIR / OIL SEPARATOR (AOS) FOR 2006-07 SUBARU IMPREZA WRX & 2004-07 STI IAG PERFORMANCE COMPETITION SERIES AIR / OIL SEPARATOR (AOS) FOR 2006-07 SUBARU IMPREZA WRX & 2004-07 STI](http://www.iagperformance.com/v/images/products/engine/aos/iag/IAG-ENG-7000/image_02_560.jpg)