GrimmSpeed Air Oil Separator

2008-2014 Subaru WRX / 2005-2012 Subaru Legacy GT


SKU: 078016-PARENTWe price match!


The Air/Oil Separator will prevent oil from entering the intake system in the Subaru WRX.
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GrimmSpeed Air Oil Separator 


  • Anodized black finish option with white GrimmSpeed logo
  • The unique design utilizes the factory oil filler cap location to maintain your PCV system
  • Prevents harmful oil and oil vapors from entering the crankcase and head ventilation system
  • Prevents the reduction of fuel octane
  • Prevents the higher chances of engine knock and detonation
  • Prevents worse emissions 
  • Prevents higher oil consumption 
  • Very compact design
  • Coalesces oil without using a mesh media which can cause contaminants to collect and cause a sludge buildup
  • The design eliminates the need to check/empty your catch can while refilling your oil 
  • Includes all of the required fittings
  • Includes hose that is cut to specific lengths and zip ties

GrimmSpeed Air Oil Separator 

A quality air/oil separator kit should be commonplace with any Subaru WRX. GrimmSpeed checks all of the boxes with their fine example. The GimmSpeed Air Oil Separator will remove oil from entering your ventilation system. This will ultimately prevent oil from entering your intake system.

When oil enters your intake system, it harms the performance by creating detonation issues, worsens the gas mileage, and lowers the gas octane rating. It could cause buildup on your valves, and it can decrease your horsepower. All of these harmful elements can be avoided with a proper air/oil separator kit. 

The GrimmSpeed Air/Oil Separator will still maintain the factory PCV Valve while separating the oil from the crankcase and head ventilation. Once installed, your engine will run more efficiently because no oil will be in the intake system. This kit will include all of the pre-cut hoses and fittings and will be ready for the installation. 

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