02-14 Subaru WRX / 04-21 STI - Radium Dual Catch Can Fluid Lock Kit

This closed-loop dual oil catch can system protects the engine by capturing crankcase blow-by oil before it enters the intake stream. By preventing oil vapor buildup in the intercooler and intake manifold, this kit maintains optimal combustion efficiency and effectively raises the octane rating. The system utilizes two independent cans to maintain the factory PCV plumbing strategy, ensuring negative crankcase pressure for improved performance. Features include 8oz capacity per can, 2-step oil separation baffling, and O-ring sealed dipsticks for easy servicing. The bolt-in design provides a clean installation on the RH strut tower, though it is not compatible with RHD vehicles. For those looking to maximize the performance gains from this hardware, a custom etune from Migtuned is highly recommended for your specific year and model. Regular maintenance is required to empty the catch cans. This setup ensures cleaner air intake and prevents unwanted oil sludge accumulation throughout the induction system.

Brand
Radium Engineering
Product Type
Engine Air Oil Separator
Compatibility
Subaru WRX 2002-2014, STI 2004-2021, Forester XT 2004-2013
System Type
Closed-loop
Capacity
8 oz (per can)
Ports
10AN ORB (main), 4AN ORB (drain)
Baffling
2-step oil separation
Installation
Bolt-in
Material
Aluminum
Seal
O-ring sealed dipstick