Radium 12-21 FR-S/BRZ/86 PCV Side Catch Can Kit Fluid Lock

The PCV kit mounts on the RH side of the engine bay. This catch can runs inline with the 3/8" PCV (positive crankcase ventilation) valve. When the intake manifold pressure is close to or greater than atmospheric pressure, the PCV valve closes and this hose experiences no flow. The PCV hose will experience metered vacuum when the engine is idling, steady state cruising, and decelerating. This would normally draw unwanted crankcase vapor, unspent fuel, and oil sludge into the intake manifold immediately after a high load run.

NOTE: Because the Radium Engineering catch cans are pressure sealed, they are great for boosted applications as well. Connecting to the intake manifold is permitted.