Air and Fuel› Air Cleaners, Filters, Intakes and Components

Perrin Performance

Air/Oil Separator

$486.20

SKU: PSP-ENG-605

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Perrin Air/Oil Separator is a high-performance oil separation system designed for 2002-2007 Subaru WRX and STI models equipped with a top-mount intercooler (TMIC). Unlike standard catch cans, this unit separates oil from engine blow-by and automatically drains it back into the engine, eliminating the need for manual maintenance.

This system uses advanced swirl pot technology and multi-layer baffles to maximize surface area and efficiency within a compact housing. A coolant-heated base plate further prevents sludge buildup by maintaining consistent internal temperatures.

Fitment

Fitment Guaranteed

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on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandPerrin Performance
Part NumberPSP-ENG-605
CategoryAir and Fuel

Buy with Confidence

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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