DUAL CATCH CAN KIT, 02-07 WRX AND STI

20-0208-02

An oil catch can is essential on a performance vehicle to protect the engine from elevated levels of crankcase blow-by oil that accumulate from 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.

These kits 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 and promotes negative crankcase pressure for optimal performance. Furthermore, closed loop systems prevent unwanted oil vapors from being deteced in the cabin.

This kit contains two independent catch cans, each plumbed into different parts of the PCV system. It is designed for users wanting to keep the function of the the closed loop PCV valve which flows fresh air through the engine block to pull out blow-by gasses.
For more information on how crankcase ventilation systems work and why two catch cans are used, click HERE.
The catch cans install on the RH strut tower, as shown below, and interface with the factory PCV and crankcase ventilation hoses. This kit may NOT be compatible with some rotated turbo setups. Please evaluate closely before purchasing. 

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

20-0208-02 Mounting Compatibility 
02-07 Impreza WRX
02-07 Impreza WRX STi
04-08 Forester XT
05-06 Saab 9-2X Aero