Closed Air Intake System Ford Focus ST Mk3 ST250

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.