Killer B Performance AOS Catch Can Add-On - 2002-2021 Subaru WRX / STI / 2005-2009 Legacy GT Brakes- Rotors & Pads>Brake Pads - Performance or select an optional Diode

or select an optional Diode Dynamics wire harness

If you have an intake

When coolant boils

We have track tested this item on multiple vehicles on multiple different tracks

Killer B Performance AOS Catch Can Add-On - 2002-2021 Subaru WRX / STI / 2005-2009 Legacy GT Brakes- Rotors & Pads>Brake Pads - Performance or select an optional DiodeThis is the Killer B Motorsport Catch Can Add On Option. This has been designed to be added to the Killer B Motorsport AOS for those that do not want to drain collected liquids back into the crankcase. Killer B Performance AOS Catch Can Add On SPECS: The high performance function of the Killer B Motorsport AOS is maintained without the need to drain collected liquid back into the crankcase Billet aluminum construction TIG welded Stainless mount