Radium Engineering Fluid Lock Dual Catch Can Kit Ford Focus Rs 2016-2018An oil catch can is essential on a performance vehicle to protect the engine from elevated levels of crankcase blow by accumulated from high performance driving. Excess oil saturated air circulating back into the air intake stream can lead to degraded performance. Focus EcoBoost Catch Can Kit DetailsRadium Engineering catch cans feature large 10AN ORB ports, a 4AN ORB drain port, 2 step oil separation baffling, and an O ring sealed dipstick. These