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:

1. Sharper throttle response with reduced turbo lag
2. Quicker spool-up and more aggressive acceleration
3. Stronger midrange torque for daily driving and spirited runs
4. 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 motorsport look under the hood. Paired with reinforced silicone couplers and clamps, this intake is built for long-term reliability, whether on the street or track.

On top of raw performance, the semi-closed design enhances the driving experience with a deep induction growl, crisp turbo spool, and sharp blow-off acoustics that give your M340i a more aggressive character without overwhelming cabin comfort.

Key Features

• Full aluminum construction – lightweight, heat resistant & durable
• Semi-closed design balances airflow with heat protection
• High-flow filter maximizes breathing efficiency
• Sharper throttle response & reduced lag
• Consistent, cooler intake temps for reliable power
• Motorsport-inspired induction tone with amplified spool & blow-off sounds
• Reinforced silicone couplers withstand boost and heat cycles
• Direct OEM fitment with factory-style installation

FITMENT: Designed for BMW models with the B58 3.0L turbo inline-six, including: G20 M340i Sedan (2019–present), G21 M340i Touring (2019–present), G22 M340i Coupe (2020–present).

Engine Compatibility: B58B30O1 turbocharged inline-six

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