{"product_id":"20-0258-00-radium-air-oil-separator-kit-w-master-cylinder-brace-wrx-2015-2021-forester-xt-2014-2018","title":"Radium Air Oil Separator Kit w\/ Master Cylinder Brace WRX 2015-2021 \/ Forester XT 2014-2018","description":"Part #: 20-0258-00\u003cbr\u003e \u003cbr\u003e\u003cp\u003eThis radium air oil separator kit is compatible with the 2015+ Subaru WRX and 2014+ Subaru Forester XT with the FA20F engine (left-hand drive models only).\u003cspan\u003e\u003ca href=\"http:\/\/data.radiumauto.com\/PublicDocs\/19-0136.PDF\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cbr\u003e\u003c\/a\u003e\u003cimg src=\"https:\/\/www.radiumauto.com\/Assets\/ProductImages\/RadiumProd-0421.jpg?ts=022815\" alt=\"\" width=\"600\" height=\"400\"\u003e\u003ca href=\"http:\/\/data.radiumauto.com\/PublicDocs\/19-0136.PDF\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cbr\u003e\u003c\/a\u003e\u003c\/span\u003eHigh-powered modified Subaru engines tend to generate excessive blow-by oil and gasses. In these cases, an ordinary small catch can may quickly fill with oil and not be adequate. Like the Radium Engineering\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.radiumauto.com\/Dual-Catch-Can-Kit-02-14-Subaru-P817.aspx\"\u003eSubaru Dual Catch Can Kit\u003c\/a\u003e, the AOS (Air Oil Separator) kit is responsible for keeping blow-by oil and other pollutants out of the intake pipe, manifold, turbocharger, and intercooler during all engine loads. The main difference is that an AOS system returns what is collected back into the oil pan so there is no servicing required. The built-in heater keep water from condensing in the AOS, making sure ONLY oil is returned back to the oil pan, not a milky sludge.\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.radiumauto.com\/Blog\/Post\/New-Product-Release-Subaru-AOS-and-Oil-Catch-Cans-103\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCLICK HERE for a more in-depth look at the Subaru AOS\u003c\/a\u003e \u003c\/span\u003eas shown for the EJ engines, same theories apply for this application. However, the direct-injected Subaru FA20F engine in particular has an inherent problem since there are no port injectors to clean the backside of the intake valves.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.radiumauto.com\/Assets\/UniversalAOS2.jpg?ts=034953\" alt=\"\" width=\"600\" height=\"400\"\u003e\u003cbr\u003eThe AOS is constructed of CNC machined sections that screw together and are sealed with O-rings. The AOS can be completely disassembled for cleaning or servicing. \u003c\/p\u003e\n\u003cstrong\u003e\u003cspan\u003eBenefits\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e-Effectively raises the fuel octane and increases engine performance with cleaner inlet air \u003cbr\u003e-Prevents oil buildup in the intake or intercooler system walls, throttle body, intake manifold, etc. \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e-Lowers hydrocarbon emissions\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e2015+ Subaru WRX Installation\u003c\/strong\u003e\u003cbr\u003eThe Radium Engineering AOS kit installs on the LH side of the engine bay, near the brake master cylinder. The outlet (side port) of the AOS is plumbed back to the turbo inlet pipe, creating a completely sealed system.\u003cbr\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/www.radiumauto.com\/Assets\/productDESC\/AOS_installed_1.jpg\" alt=\"\"\u003e\u003cbr\u003e\u003c\/strong\u003e\u003cspan\u003eThe AOS mounts to the\u003c\/span\u003e\u003ca href=\"http:\/\/www.radiumauto.com\/Master-Cylinder-Brace-for-2015-Subaru-WRX-P959.aspx\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan\u003e \u003c\/span\u003eRadium Brake Master Cylinder Brace\u003c\/a\u003e\u003cspan\u003e, as shown below. This brace is REQUIRED for installation.\u003c\/span\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/www.radiumauto.com\/Assets\/productDESC\/AOS_installed_2.jpg\" alt=\"\" width=\"600\" height=\"400\"\u003e\n\u003cp\u003e\u003cspan\u003eThe PCV valve is replaced by a custom machined straight-through adapter fitting, shown below. Oil collected in the AOS drains out the bottom fitting and back into the engine block through this fitting.\u003cbr\u003e\u003cimg src=\"https:\/\/www.radiumauto.com\/Assets\/productDESC\/PCV_Delete.jpg\" alt=\"\" width=\"600\" height=\"400\"\u003e\u003cbr\u003e\u003cstrong\u003eKit Contents\u003c\/strong\u003e\u003cbr\u003e-Machined aluminum Radium Engineering Air\/Oil Separator\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e-Specially designed mounting bracket\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e-All necessary SAE J30R7 rated PCV\/Emissions hose\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e-Coolant hoses and fittings\u003cbr\u003e-PCV delete fitting\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e-All necessary aluminum fittings and hose-ends\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e-Stainless steel mounting hardware \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e-20-0255 Master Cylinder Brace (20-0258-00 only) \u003c\/span\u003e\u003c\/p\u003e\n\u003cimg src=\"http:\/\/www.radiumauto.com\/Assets\/ProductImages\/20-0258-00.jpg\" alt=\"\" width=\"600\" height=\"400\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"http:\/\/www.radiumauto.com\/Assets\/ProductImages\/20-0258-01.jpg\" alt=\"\"\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eMeasurements\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eAOS Height: 6.94\" (top of dipstick to bottom of AOS)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eAOS Diameter: 3.45\" Round \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eAOS Capacity: 20.3 oz (600mL)\u003c\/span\u003e \u003cp\u003e\u003cstrong\u003e\u003cu\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/u\u003e\u003c\/strong\u003e\u003c\/p\u003e\n","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":867537059859,"sku":"rad20-0258-00","price":474.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1398\/9853\/products\/Radium-Air-Oil-Separator-Kit-w-Master-Cylinder-Brace-WRX-2015-2021-Forester-XT-2014-2018.jpg?v=1743852136","url":"https:\/\/www.importimageracing.com\/products\/20-0258-00-radium-air-oil-separator-kit-w-master-cylinder-brace-wrx-2015-2021-forester-xt-2014-2018","provider":"Import Image Racing","version":"1.0","type":"link"}