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Air and Fuel Intake Manifolds and Components

Perrin Performance

PERRIN 15-21 Subaru WRX (w/o Eyesight OEM Option) Air Oil Separator Kit - Red

$588.00 $499.80 Save $88.20

SKU: P004 PSP-ENG-609RD

In Stock
In Stock
Ships by Jun 18
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

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 PDFMore 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

Fitment

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Specifications

BrandPerrin Performance
Part NumberP004 PSP-ENG-609RD

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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