{"product_id":"vtt-billet-high-flow-oil-cap-vent-adapter-for-bmw-gen-2-b58tu-s58-b48-b46-engines","title":"VTT Billet High-Flow Oil Cap Vent Adapter For BMW Gen 2 B58TU, S58, B48 \u0026 B46 Engines","description":"\u003ch1\u003eVTT Billet High-Flow Oil Cap Vent Adapter\u003c\/h1\u003e\n\u003ch2\u003eFor BMW Gen 2 B58TU, S58, B48 \u0026amp; B46 Engines\u003c\/h2\u003e\n\u003cp\u003eBuilding a high-horsepower \u003cstrong\u003eBMW B58TU, S58, B48, or B46\u003c\/strong\u003e? As boost pressure increases, so does crankcase pressure. If that pressure isn’t properly managed, it can lead to oil leaks, excessive oil consumption, smoking, reduced ring seal, power loss, and in severe cases, engine failure.\u003c\/p\u003e\n\u003cp\u003eProper crankcase evacuation is one of the most overlooked aspects of building a reliable, high-powered turbocharged BMW. As cylinder pressure increases, so does blow-by. If the crankcase cannot evacuate that pressure efficiently, the pressure begins working against the piston rings, reducing ring seal while forcing oil vapor throughout the engine.\u003c\/p\u003e\n\u003cp\u003eBMW’s factory crankcase ventilation system was designed around OEM horsepower levels and emissions requirements—not 700, 1,000, or even 2,000+ horsepower.\u003c\/p\u003e\n\u003cp\u003eThrough years of developing some of the world’s quickest BMWs, we’ve found that traditional -10AN vent systems quickly become a restriction on high-power builds. Even many -12AN systems begin reaching their limits as power continues to increase.\u003c\/p\u003e\n\u003cp\u003eTo solve this, VTT developed our \u003cstrong\u003eBillet High-Flow Oil Cap Vent Adapter\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003ePrecision CNC machined from billet aluminum, the adapter securely replaces the factory oil cap while providing a massive \u003cstrong\u003e-16ORB\u003c\/strong\u003e outlet, allowing you to configure the crankcase ventilation system exactly how your build demands.\u003c\/p\u003e\n\u003cp\u003eWhether you’re running upgraded factory turbos, hybrid turbos, or a full-frame single turbo conversion, this system provides substantially greater ventilation capacity than the factory PCV system while integrating seamlessly into virtually any external catch can or breather setup.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eFeatures\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003ePrecision CNC-machined billet aluminum construction\u003c\/li\u003e\n\u003cli\u003eDirect replacement for the factory oil cap\u003c\/li\u003e\n\u003cli\u003eAttractive billet oil cap design\u003c\/li\u003e\n\u003cli\u003eOEM-style locking mechanism\u003c\/li\u003e\n\u003cli\u003eFits OEM B58TU, S58, B48 and B46 valve covers\u003c\/li\u003e\n\u003cli\u003eCompatible with all VTT Billet and Cast Valve Covers\u003c\/li\u003e\n\u003cli\u003eIntegrated internal oil separation passages designed to reduce large oil droplets before entering the catch can\u003c\/li\u003e\n\u003cli\u003eLarge \u003cstrong\u003e-16ORB\u003c\/strong\u003e outlet\u003c\/li\u003e\n\u003cli\u003eSupports vent sizes from \u003cstrong\u003e-12AN through -20AN\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompatible with virtually any catch can or atmospheric breather system\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for high-horsepower turbocharged BMW engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch1\u003eWhy Upgrade?\u003c\/h1\u003e\n\u003cp\u003eAs horsepower increases, so does crankcase pressure.\u003c\/p\u003e\n\u003cp\u003eIf that pressure isn’t evacuated efficiently, it can contribute to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExcessive oil consumption\u003c\/li\u003e\n\u003cli\u003eOil leaks\u003c\/li\u003e\n\u003cli\u003eSmoking under boost\u003c\/li\u003e\n\u003cli\u003eReduced piston ring seal\u003c\/li\u003e\n\u003cli\u003eIncreased crankcase pressure\u003c\/li\u003e\n\u003cli\u003eReduced engine efficiency\u003c\/li\u003e\n\u003cli\u003eInconsistent performance\u003c\/li\u003e\n\u003cli\u003eIncreased stress on engine seals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIncreasing crankcase ventilation capacity allows the engine to evacuate blow-by more effectively while helping maintain crankcase stability during high boost and sustained high-RPM operation.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eAvailable Fitting Options\u003c\/h1\u003e\n\u003cp\u003eChoose the configuration best suited for your build.\u003c\/p\u003e\n\u003ch3\u003eStraight Fittings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e-16ORB to -12AN Male\u003c\/strong\u003e (17.4mm Hose ID)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e-16ORB to -12AN Male with 1\/8″ NPT Sensor Port\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e-16ORB to -16AN Male\u003c\/strong\u003e (22.2mm Hose ID)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e-16ORB to -16AN Male with 1\/8″ NPT Sensor Port\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e-16ORB to -20AN Male\u003c\/strong\u003e (28.5mm Hose ID)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eLow Profile Fittings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e90° Low Profile -12AN Male\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e90° Low Profile -16AN Male\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIdeal where hood clearance is limited.\u003c\/p\u003e\n\u003ch3\u003eOptional Check Valve\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e-16AN One-Way Check Valve\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMaintains crankcase vacuum during idle and light throttle operation while allowing unrestricted crankcase evacuation during boost.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e(Additional fittings may be required depending on your installation.)\u003c\/em\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eVehicle Compatibility\u003c\/h1\u003e","brand":"Vargas Turbo Technologies","offers":[{"title":"S58\/B58(TU) stock VC style","offer_id":47878179979420,"sku":"VTT-OILCAP-16ORB-ADAPTER-58","price":64.99,"currency_code":"USD","in_stock":true},{"title":"VTT Billet\/Cast VC Style (screw in)","offer_id":47878180012188,"sku":"VTT-OILCAP-16ORB-ADAPTER-SCREW","price":64.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0473\/3206\/5436\/files\/IMG_4224.jpg?v=1791771272","url":"https:\/\/daroracing.com\/products\/vtt-billet-high-flow-oil-cap-vent-adapter-for-bmw-gen-2-b58tu-s58-b48-b46-engines","provider":"Daro Racing","version":"1.0","type":"link"}