Maximize your Focus RS's high-performance potential with this precision air cleaner filter, specifically designed for 2016-2018 models with the 2.3-liter EcoBoost engine. Advanced filtration media captures microscopic particles while maintaining optimal airflow to your turbocharged powerplant, ensuring consistent horsepower delivery and responsive acceleration. This OEM-specification component prevents contaminant ingestion that could compromise engine integrity, supporting both performance and longevity. Essential maintenance for serious enthusiasts demanding reliability from their track-capable machine.