Engines and Components› Oiling Systems

Killer B Motorsport

Killer B Twin Scroll Fury Turbo Kit Recirculated EWG- Barebones

$4,781.67

SKU: K005 FA-TSF-RC-B

In Stock
In Stock
Ships by Jun 9
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Killer B Motorsport Air Oil Separator (AOS) with Plumbing Kit for 2015-2021 WRX is designed to improve engine performance and longevity by separating oil from crankcase gases before recirculation into the intake. This prevents oil contamination of the intercooler and intake manifold, reducing efficiency loss and carbon buildup. Includes all necessary plumbing.

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

BrandKiller B Motorsport
Part NumberK005 FA-TSF-RC-B

Videos

Killer B Motorsport Air Oil Separator Install

Killer B Motorsport Air Oil Separator Install
2015 SUBARU WRX STI - Killer B AOS - Part 1 - Overview/Installation/STI Status Update - OCTurboJoe

2015 SUBARU WRX STI - Killer B AOS - Part 1 - Overview/Installation/STI Status Update - OCTurboJoe
Our Killer-B Motorsports Air Oil Separator Review on Scotty's 2011 STIs

Our Killer-B Motorsports Air Oil Separator Review on Scotty's 2011 STIs

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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