Catch Can Kit CCV for Ford Mustang GT 15-17 Fluid Lock Radium Engineering - USA-RAD-20-0287-FL - 11-17 Mustang GT Catch Can Kit Details Radium 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 kits mount to the engine using factory holes on the valve covers and integrate perfectly with the surrounding components. These two oil catch cans (PCV side and Crankcase side) function completely independent of each other and are sold individually or together. They do NOT vent to atmosphere (VTA), thus are emissions and track legal. Closed loop systems remove the oil and sludge from the PCV gasses before it is routed to the engine to be burned. A closed loop system also promotes negative crankcase pressure for optimal performance. Furthermore, closed systems prevent unwanted oil vapors from entering the cabin. The dipsticks built into the catch cans allow easy inspection of accumulated fluid. No cutting, drilling or permanent modification to the vehicle is required. For the ultimate in engine protection, Radium recommends the "Dual Catch Can Kit" which utilizes both the "CCV" and "PCV" catch can kits.  15-17 Mustang GT : 20-0325-FL contains 1x PCV catch can kit 20-0267-FL and 1x crankcase catch can kit 20-0287-FL. Instruction PDF