Radium Engineering

Radium Engineering 2002-21 Subaru EJ-Series Fluid Lock Turbo Dual Catch Can Kit

  • Sale
  • $398.95
  • Regular price $419.95
  • 8 available

Product SKU: RAD 20-0608-FL

An oil catch can is essential for engine protection from elevated levels of crankcase blow-by oil that accumulate during aggressive driving. Excess oil saturated air circulating back into the air intake stream can lead to degraded performance by depositing oil on the inside of the induction system, intercooler, intake manifold, etc. 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.

This kit contains two independent catch cans, each plumbed into different parts of the PCV system. The cans do NOT vent to atmosphere (VTA), and instead maintain the factory plumbing strategy. This closed-loop system routes clean filtered air back in through the engine promoting negative crankcase pressure for optimal performance. Furthermore, closed loop systems prevent unwanted oil vapors from being detected in the cabin. 

The catch cans are not compatible with RHD vehicles as the kit installs on the RH strut tower. As shown below, the low profile design only extends 4.8" (122mm) off the strut tower.

The 20-0608-FL kit has machining provisions for 02-21 Subaru Impreza/Forester unibody compatibility.

Furthermore, removing the 4 heat shield bolts makes catch can servicing simple and straight forward.

Catch cans must be maintained and emptied on a regular basis. The frequency will depend on how much sludge is collected which varies from vehicle to vehicle. For a maintenance-free solution, consider the Radium AOS-R.


  • Effectively raises the octane
  • Cleaner air increases engine performance 
  • Prevents oil sludge in the intake system
  • Bolt-in installation
  • Easy servicing with dipsticks
  • Capacity: 8oz each 


  • 2002-2005 Impreza WRX (EJ205)
  • 2006-2014 Impreza WRX (EJ255)
  • 2004-2014 Impreza WRX STi (EJ257)
  • 2015-2021 STi (EJ257)
  • 2004-2013 Forester XT (EJ255)
  • 2005 Saab 9-2X Aero (EJ205)
  • 2006 Saab 9-2X Aero (EJ255)

NOTE: For 02-05 Subarus with a cable-actuated throttle body, our Cruise Control Relocation Bracket must be used. For RHD vehicles, our Universal Dual Catch Cans must be used for custom mounting and plumbing.

Installation instructions available at www.radiumauto.com