Air and Fuel› Oxygen Sensors, Controllers and Components
GrimmSpeed
***Discontinued***GrimmSpeed T4 Turbo Gasket Universal
SKU: G00B 20028
Moderate — 2–4 hours
Description
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 20028 |
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 Air Oil Separator (AOS) Review
GrimmSpeed Subaru Air Oil Separator
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.
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