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

ITG INTAKES

Closed Air Intake System Ford Focus ST Mk3 ST250

$407.40

SKU: STAB99FST3

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Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The ITG STAB99FST3 is a closed air intake system designed for the Ford Focus ST Mk3 ST250. It features a larger filter area and uses a three-layer foam for improved flow and filtration. The system is mounted behind the bumper to keep it away from engine heat.
Show original supplier description
The ITG 'Maxogen' Closed Air Intake System (STAB99FST3) is engineered for the Ford Focus ST Mk3 ST250. This induction kit addresses the limitations of the standard air box, particularly when the engine has been modified with re-maps or other upgrades. The design strategically mounts the air intake behind the bumper, effectively isolating it from the heat generated under the hood. This placement helps to ensure cooler, denser air enters the engine, contributing to improved performance. Users can expect noticeable gains in power, enhanced throttle response, and a pleasing, yet not overpowering, increase in intake noise. This system is handmade in Britain and is a direct replacement for the stock airbox, offering a significant upgrade for performance-oriented Focus ST models. The replacement filter part number is ARAB65/78F.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandITG INTAKES
Part NumberSTAB99FST3
CategoryAir and Fuel
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Returns & Fitment

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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Shipping

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