Killer B

Killer B Motorsport Coolant Breather Fitting Assembly

2015-2021 Subaru WRX


SKU: DBFAV2We price match!

Out of Stock

This is the Killer B Motorsport Coolant Breather Fitting Assembly. On the FA20 WRX engine, the OEM breather/coolant fitting is made using plastic materials that can degrade over time, and eventually create a leak. And because of the multiple heat cycles, the OEM unit can break when performing maintenance that required removing or replacing the lines during an AOS install. Killer B has designed a proper solution by designing an aluminum unit that will provide you with long-lasting, and leak-free reliability.
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Killer B Motorsport Coolant Breather Fitting Assembly


  • Aluminum construction
  • Direct replacement for the failure-prone OEM plastic unit
  • Designed with a larger breather port over the restrictive OEM design
  • Removable fittings for custom installations or applications
  • Leak-free fail-free design 


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