The Radium Engineering PCV Baffle Plate mounts to the engine block and replaces the factory plastic PCV plate and valve. Compared to the OEM unit, the CNC machined aluminum Radium Engineering PCV plate features an extra baffle to prevent oil sludge from entering the intake system without restricting air flow. Furthermore, there are two 10AN ORB ports machined above both aluminum baffles. 10AN ORB Adapter Fittings can be found HERE. NOTE: The OEM configuration kit (20-0327-01) is not compatible with all vehicles. This kit includes the baffle plate and associated fittings for a plug and play installation. It is compatible with the following vehicles only:  2013+ Ford Focus ST Eco Boost 2016+ Ford Focus RS Eco Boost 2015+ Ford Mustang Eco Boost NOT COMPATIBLE WITH FORD RANGER   This kit integrates perfectly with the OEM PCV tubing or with the Radium catch can kits for Eco Boost engines. Because the OEM Ford PCV valve leaks at all boost levels, this kit includes Radium's own upgraded 10AN ORB PCV Valve which prevents boost from leaking into the crankcase. No permanent vehicle modifications are required. Exact contents of 20-0327-01 are shown in the picture below. INCLUDED IN 20-0327-01 -Billet Aluminum PCV Plate with Baffles -Aluminum 10AN ORB PCV Valve -Aluminum 10AN ORB Plug -Rubber 3/8" PCV Hose -Spring Hose Clamps x 2 -EFI-style Hose Clamp x 1   IMPORTANT: If using with the Radium Engineering Focus RS/ST catch can kits, select the this option from above.  This will install perfectly with the PCV catch can kit and no other parts are needed. A check valve is not required. Instruction PDF