KYOSTAR 4" Cold Air Intake System for 2019-2024 BMW G20 G21 M340i G22 G23 M440i G42 M240i B58TU 3.0T The KYOSTAR 4" Cold Air Intake System is designed for 2019-2024 BMW G-Series models equipped with the Gen2 B58TU 3.0T turbocharged inline-six engine. Featuring a large 4-inch intake design, this system improves airflow capacity by reducing factory intake restriction while enhancing throttle response and turbocharger sound. The high-flow filter and optimized intake routing