BMW 4 Series (G22 / G23 / G26) Carbon Fiber Semi-Closed Cold Air Intake System | M440i – B58 3.0L Turbo (2021–Present)

Take your BMW 4 Series M440i to the next level with our Full Aluminum Semi-Closed Cold Air Intake System, precision-engineered for the B58 3.0L turbocharged inline-six.

Constructed from lightweight, high-strength aluminum, this intake system delivers durability and excellent heat resistance while adding a purposeful motorsport aesthetic under the hood. The semi-closed design strikes the perfect balance between unrestricted open-cone airflow and heat shielding, ensuring your turbos receive a steady supply of cooler, denser air for consistent performance.

This intake is designed to reuse the factory turbo inlet, maintaining OEM reliability and simplicity. It connects via a shorter reinforced rubber hose, reducing airflow distance and turbulence for a smoother, more efficient path to the turbo. The result is sharper throttle response, faster spool, and stronger midrange torque compared to the restrictive stock airbox.

On top of the measurable gains, the intake transforms your driving experience with a deep induction growl, crisp turbo spool, and satisfying blow-off acoustics — perfectly matching the sporty nature of the 4 Series.

Key Features

• Full aluminum housing – lightweight, strong & highly heat-resistant
• Semi-closed design balances raw airflow with heat shielding
• Reuses factory turbo inlet for OEM fitment and reliability
• Shorter reinforced hose creates a smoother, more efficient airflow path
• Sharper throttle response & reduced turbo lag
• Cooler intake temps for consistent horsepower delivery
• Aggressive induction tone with amplified spool & blow-off sounds
• Direct OEM fitment with secure installation

FITMENT: Designed for BMW models with the B58 3.0L turbo inline-six, including: G22 M440i Coupe (2021–present), G23 M440i Convertible (2021–present), G26 M440i Gran Coupe (2022–present).

Engine Compatibility: B58B30O1 turbocharged inline-six

Please refer to the “Fitment” section in the product description for compatibility details.