Perrin Air Oil Separator AOS for 2015-2021 WRX (PSP-ENG-609)

Perrin air oil separator for 2015-2021 Subaru WRX. An AOS traps oil from the crankcase vents before it enters the intake, reduces carbon build-up, increases intercooler efficiency, which reduces the chance of performance-robbing detonation. Available in black, red or neon yellow.

Vehicle Fitment:
2015-2021 Subaru WRX
• Fits with TMIC or FMIC
• Installation Guide PDF

More Info:
The Perrin Air Oil Separator is not a catch can. Catch cans capture engine blow-by and stores it in a container, which requires constant attention and removal of oil every few hundred miles. The air oil separator separates the oil from the air, draining it back to the engine, which eliminates the need for constant attention and draining of oil. As oil drains from the bottom of the Perrin Air Oil Separator, clean oil-free air vents out of the top to rejoin the intake tract.

Purchase Includes:
• (1) PERRIN Universal Air Oil Separator (AOS)
• (1) O-ring
• (1) 2015+ WRX AOS Bracket
• (1) Turbo Sump Restrictor/AOS Drain Adapter
• (4’) 5/8” Crank Case Vent Hose
• (7’) 1/2” Crank Case Vent Hose
• (4’) 5/16” Fuel Hose
• (6’) 5/16” Coolant Hose
• (10) #6 or 12-22mm Hose Clamps
• (8) #2 or 8-16 Hose Clamps
• (1) 3/8” Hose Plug
• (1) 3/8 NPT 1/2” Straight Fitting
• (2) 3/8 NPT 1/2" 90 Degree Fitting
• (2) 3/8 NPT 5/8" 90 Degree Fitting
• (1) 3/8 NPT- 5/8” Barb Female Fitting
• (1) 1/8 NPT 5/16” 90 Degree Barb Fitting
• (2) 1/8 NPT 5/16” Straight Barb Fitting
• (1) 5/8" Connector
• (1) 1/2” 90 Degree Connector
• (1) 5/16”-5/16” Connector
• (1) 5/8-1/2” Connector
• (1) 3/8 NPT Plug
• (1) 3/8” NPT Plug
• (2) M8x10mm Flat Head Cap Screw
• (1) M6x14mm Button Head Cap Screw
• (3) M6 Fender Washer Black
• (2) M6 SS Washer
• (2) M6 Nut
• (1) M4 Hex Wrench
• (1) M5 Hex Wrench
• (23) Zip Ties

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