BMW 3 Series (G20 / G21) Full Aluminum Semi-Closed Cold Air Intake System | M340i – B58 3.0L Turbo (2019–Present)

Boost the performance of your BMW M340i (G20 Sedan, G21 Touring, G22 Coupe) with our Full Aluminum Semi-Closed Cold Air Intake System, engineered for the B58 3.0L turbocharged inline-six. Crafted from lightweight, high-strength aluminum, this intake provides the perfect balance of open-cone breathing and heat shielding. The semi-closed design feeds your turbos with a direct supply of cool, dense air while deflecting radiant engine heat, keeping intake temps lower and performance consistent. Unlike the restrictive factory airbox, this system allows for unrestricted airflow and improved turbo efficiency. The result is performance you can feel every time you drive: Sharper throttle response with reduced turbo lag Quicker spool-up and more aggressive acceleration Stronger midrange torque for daily driving and spirited runs Horsepower gains that grow even further under ECU tuning The aluminum construction ensures durability under high-heat and high-boost conditions while adding a premium