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Killer B likes solving problems. As some of you FA20 WRX enthusiasts have found, the OEM plastic breather/coolant fitting can start to leak over time, or worse, break when you're trying to remove/replace lines during a build or an AOS install.
So, in typical Killer B fashion, we have designed a no fail, no leak part. They have put their own performance spin on it as well, opening up the breather port, as the factory plastic piece is too restrictive.
Fits all 2013+ Subaru BRZ/Scion FR-S/Toyota GR86, and 2015-2016 Subaru WRX.
