Cold Air Intake System

The ROUSH Performance 422065 Cold Air Intake System is engineered to enhance the performance of your Ford Focus ST (2013-2018) and Focus RS (2016-2018). This kit directly replaces the factory intake components, including the air filter and turbo inlet, with a more efficient, free-flowing design. The system includes a custom-formed, ROUSH-branded airbox topped with EPDM foam to ensure an airtight seal against the hood, preventing hot air from entering the engine. Key features include a premium, reusable high-flow air filter that can be cleaned and oiled for longevity, and a 3-inch high-strength induction tube with a black texture finish for an OEM appearance and fit. A silicone coupler with reinforced, weaved fibers provides a superior seal between the induction tube and the turbo inlet. It also retains the factory PCV connection, eliminating the need for drilling or cutting components. Installation is straightforward and can typically be completed in under an hour with basic tools. All necessary mounting clamps and hardware are included. The ROUSH 422065 is 50 State Legal for 2013-2017 Focus ST and 2016-2017 Focus RS model years (EO #D-418-30). This product is backed by a ROUSH 90-Day Limited Warranty.