AIRTEC Motorsport Cold Air Intake / Induction Kit for Ford Focus ST Mk4 2.3 EcoBoost (2019+) - High-Flow Open Cone Air Filter with Heat Shield & CNC MAF Housing - Performance CAI Airbox Upgrade ST3 2.3L Petrol

Unlock the soundtrack and response your Focus ST deserves

Give your 2019+ Ford Focus ST 2.3 petrol the breathing upgrade it needs with this AIRTEC Motorsport high-flow intake system. It replaces the restrictive OE airbox with an open cone setup and a dedicated, machined mass air flow tube for smooth, consistent metering. Expect crisper pedal response, a fuller turbo soundtrack and a cleaner, motorsport-inspired underbonnet look.

Why enthusiasts choose this AIRTEC intake

• Bigger sound, better drive - pronounced induction notes and turbo chatter without drone
• Improved airflow - lets the 2.3 litre EcoBoost pull air more freely for a sharper feel
• Underbonnet presence - purposeful hardware that elevates the engine bay
• Works great on factory calibration and remapped cars - a solid base for future power upgrades

Key hardware

• High-flow pleated cotton cone filter with AIRTEC branding
• CNC machined aluminium MAF housing sized for the 2.3 EcoBoost
• Powder coated alloy heat shield to help keep intake temps down
• Direct bolt-on to the original mounting points - typically a sub 30 minute install with basic tools

Compatibility

Designed specifically for the Ford Focus ST Mk4 2.3 EcoBoost (2019 onwards). Suitable for standard vehicles and those with performance software and supporting modifications.

Real-world results

We have fitted this intake on customer cars and our own demonstrators. Feedback has been consistently positive for sound quality, fit and finish, and the more responsive, lively feel on the road.

Fitting options

Simple DIY installation for competent home mechanics. Prefer professional fitting? Book expert installation with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Looking for this upgrade under different names

Common searches include: Ford Focus ST 2019 intake system, Focus ST3 air intake upgrade, 2.3 litre EcoBoost air intake system, open cone filter kit for Focus ST 2.3, high flow air intake for Ford ST, performance intake for Focus ST 2.3L petrol, Focus MK4 ST air intake mod, AIRTEC Focus ST performance filter kit, MAF housing upgrade Focus ST, heat shielded intake for Focus ST 2.3, induction noise upgrade Focus ST 2019+, turbo sound intake Focus ST 2.3, Focus ST breathing upgrade, Focus ST open filter conversion.