GrimmSpeed Air Oil Separator Subaru WRX 2002-2007 STI 2004

Name: GrimmSpeed Air Oil Separator Subaru WRX 2002-2007 STI 2004
Brand: GrimmSpeed
SKU: G00B 78006
Price: 350.00 USD
Availability: InStock

$350.00

SKU: G00B 78006

In Stock

Ships by Jun 10

Free Shipping

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Description

The GrimmSpeed Air/Oil Separator (AOS) for turbocharged Subaru models removes oil from the engine ventilation system, preventing it from entering the intake. This helps reduce fuel octane reduction, engine knock, emissions, and oil consumption.

Fitment

Fitment Guaranteed

Don’t gamble
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

Brand	GrimmSpeed
Part Number	G00B 78006

Videos

GrimmSpeed Air Oil Separator Install 08+WRX / LGT

GrimmSpeed Air Oil Separator (AOS) Install

GrimmSpeed Air Oil Separator - 2002-2007 WRX/2004-2015 STI Install/Review

GRIMMSPEED AIR OIL SEPARATOR HOW TO TUTORIAL INSTALL SUBARU WRX LEGACY GT LGT OPEN BOX REVIEW AOS

How To Install a Air/Oil Separator for Subaru WRX & WRX STI! (GrimmSpeed)

GrimmSpeed Subaru Air Oil Separator

Grimmspeed Air Oil Separator (AOS) Review

PART REVIEW: GrimmSpeed Air Oil Separator (2006 Subaru WRX STi)

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.

View Full Return Policy