GrimmSpeed 02-07 WRX / 04-10+ STi RED Air Oil Separator

Name: GrimmSpeed 02-07 WRX / 04-10+ STi RED Air Oil Separator
Brand: GrimmSpeed
SKU: G00B 078006R
Price: 315.00 USD
Availability: InStock

$315.00

SKU: G00B 078006R

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) is designed to improve engine performance by separating oil particles from crankcase gases, preventing them from re-entering the intake system. This reduces carbon buildup on intake valves, maintains optimal octane levels, and extends engine life. It features a unique multi-stage baffling system and is constructed from high-quality materials for durability.

Fitment

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Available on iOS & Android

Specifications

Brand	GrimmSpeed
Part Number	G00B 078006R

Videos

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

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

GrimmSpeed Air Oil Separator Install 08+WRX / LGT

Navigating AOS choices: Performance Vs. Pitfalls

Grimmspeed Air Oil Separator (AOS) Review

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

2012 Subaru WRX Hatch: Mod Update 6 Grimmspeed AOS Install

How does an AOS work?

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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